Dr. Takahisa Jitsuno Profile

Dr. Takahisa Jitsuno

Physicit at Osaka Univ

SPIE Involvement:

Conference Program Committee | Author | Editor

Publications (73)

Proceedings Article | 18 December 2024 Presentation + Paper

Presentation + Paper

Countermeasures for the mirror carbonization in ELI-NP

Takahisa Jitsuno, Antonia Toma, Petrisor Gabriel Bleotu, Stefan Popa, Alexandra Grigore, Alexandru Lazar, Sergiu Rusnac, Fattima Al-Abedj, Silvana Vasilca, Viviana Vladutescu, Yoshihide Nakamiya, Madalin Rosu, Daniel Ursescu, Ioan Dancus, Cristian Stancu, Gheorghe Dinescu

Proceedings Volume 13190, 131900L (2024) https://doi.org/10.1117/12.3032895

KEYWORDS: Contamination, Mirrors, Silica, Coating, Vacuum, Plasma, Vacuum chambers, Laser systems engineering, Mirror surfaces, Carbon

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Proceedings Article | 4 March 2019 Paper

Paper

Longitudinally excited CO2 laser with a spike pulse width of 100 ns to 300 ns

Kohei Sakamoto, Kazuyuki Uno, Takahisa Jitsuno

Proceedings Volume 10898, 108980U (2019) https://doi.org/10.1117/12.2507718

KEYWORDS: Pulsed laser operation, Gas lasers, Optical resonators, Carbon dioxide lasers

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Proceedings Article | 26 November 2018 Presentation

Presentation

Development of adaptively mixed thin film (AMTF) deposited by a dielectric material and a plastic (Conference Presentation)

Kunio Yoshida, Takayuki Okamoto, Takuya Mikami, Hidetsugu Yoshida, Junji Kawanaka, Noriaki Miyanaga, Shinji Motokoshi, Takahisa Jitsuno

Proceedings Volume 10805, 1080513 (2018) https://doi.org/10.1117/12.2500273

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Proceedings Article | 5 November 2018 Paper

Paper

Control of laser pulse waveform in longitudinally excited CO2 laser by adjustment of gas medium

Kazuyuki Uno, Takahisa Jitsuno

Proceedings Volume 10811, 1081111 (2018) https://doi.org/10.1117/12.2500559

KEYWORDS: Pulsed laser operation, Gas lasers, Carbon dioxide lasers

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Proceedings Article | 16 February 2018 Paper

Paper

Longitudinally excited CO2 laser with short laser pulse and high quality beam

Kazuyuki Uno, Jianhui Li, Hayato Goto, Takahisa Jitsuno

Proceedings Volume 10518, 105181Y (2018) https://doi.org/10.1117/12.2288071

KEYWORDS: Carbon monoxide, Electrodes, Mirrors, Capacitance

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Proceedings Article | 1 August 2017 Paper

Paper

Dental hard tissue drilling by longitudinally excited CO2 laser

Kazuyuki Uno, Takuya Yamamoto, Tetsuya Akitsu, Takahisa Jitsuno

Proceedings Volume 10417, 104170U (2017) https://doi.org/10.1117/12.2284944

KEYWORDS: Laser tissue interaction, Carbon dioxide lasers, Laser drilling, Gas lasers, Laser ablation

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Proceedings Article | 23 February 2017 Presentation + Paper

Presentation + Paper

Extremely large bimorph deformable mirror for high intense laser beam correction

Alexis Kudryashov, Vadim Samarkin, Alex Aleksandrov, Gilles Borsoni, Takahisa Jitsuno, Pavel Romanov, Julia Sheldakova

Proceedings Volume 10084, 1008408 (2017) https://doi.org/10.1117/12.2257461

KEYWORDS: Mirrors, Deformable mirrors, Wavefront sensors, Sensors, High power lasers, Electrodes, Actuators, Glasses, Coating, Manufacturing, Wavefront distortions

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Proceedings Article | 20 February 2017 Paper

Paper

Polycarbonate resin drilling by longitudinally excited CO2 laser

Kazuyuki Uno, Masaya Kato, Tetsuya Akitsu, Takahisa Jitsuno

Proceedings Volume 10091, 1009115 (2017) https://doi.org/10.1117/12.2251174

KEYWORDS: Carbon dioxide lasers, Laser ablation, Laser drilling, Gas lasers, Polymers, Thermal effects, Laser development, Carbon monoxide, Pulsed laser operation, Laser processing, Optical resonators, Mirrors, Capacitance, Power supplies

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Proceedings Article | 9 November 2016 Paper

Paper

Longitudinally excited CO2 laser with short laser pulse operating at high repetition rate

Jianhui Li, Kazuyuki Uno, Tetsuya Akitsu, Takahisa Jitsuno

Proceedings Volume 10016, 100161G (2016) https://doi.org/10.1117/12.2245529

KEYWORDS: Carbon dioxide lasers, Pulsed laser operation, Laser development, Optical resonators, Output couplers, Gas lasers, Carbon monoxide, Laser energy, Laser applications, Electrodes

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Proceedings Article | 9 November 2016 Paper

Paper

Longitudinally excited CO2 laser with multiple laser tubes

Kazuyuki Uno, Tetsuya Akitsu, Takahisa Jitsuno

Proceedings Volume 10016, 100161N (2016) https://doi.org/10.1117/12.2246075

KEYWORDS: Carbon dioxide lasers, Pulsed laser operation, Laser systems engineering, Capacitance, Gas lasers, Carbon monoxide, Laser energy, Dielectrics, Output couplers, Mirrors

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Proceedings Article | 9 August 2016 Paper

Paper

Source of contamination in damage-test sample and vacuum

T. Jitsuno, H. Murakami, S. Motokoshi, K. Mikami, T. Mikami, T. Kawasaki, J. Kawanaka, N. Miyanaga

Proceedings Volume 9983, 998316 (2016) https://doi.org/10.1117/12.2239547

KEYWORDS: Contamination, Coating, Laser induced damage, Laser damage threshold, Mirrors, Optical components, Polishing, Surface finishing, High power lasers, Ultraviolet radiation, Optical coatings, Laser systems engineering, Humidity, Dielectrics, Pulsed laser operation

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Proceedings Article | 22 July 2016 Paper

Paper

Ion-assisted coating for large-scale Bimorph deformable mirror

Takuya Mikami, Takayuki Okamoto, Kunio Yoshida, Takahisa Jitsuno, Shinji Motokoshi, Vadim Samarkin, Alexis Kudryashov, Junji Kawanaka, Noriaki Miyanaga

Proceedings Volume 9983, 99830B (2016) https://doi.org/10.1117/12.2239479

KEYWORDS: Coating, Actuators, Mirrors, Deformable mirrors, Laser systems engineering, Polishing, Laser damage threshold, Laser induced damage, Deformable mirrors, Laser induced damage, Laser damage threshold, Surface finishing, Interferometers

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Proceedings Article | 22 April 2016 Paper

Paper

Largest in the world bimorph deformable mirror for high-power laser beam correction

Alexis Kudryashov, Vadim Samarkin, Alex Aleksandrov, Giles Borsoni, Takahisa Jitsuno, Pavel Romanov, Julia Sheldakova

Proceedings Volume 9727, 97271I (2016) https://doi.org/10.1117/12.2222003

KEYWORDS: Mirrors, Deformable mirrors, Electrodes, Actuators, High power lasers, Wavefront sensors, Glasses, Coating, Wavefront distortions, Wavefronts

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Proceedings Article | 14 March 2016 Paper

Paper

SiO2-glass drilling by short-pulse CO2 laser with controllable pulse-tail energy

Kazuyuki Uno, Takuya Yamamoto, Miyu Watanabe, Tetsuya Akitsu, Takahisa Jitsuno

Proceedings Volume 9735, 973519 (2016) https://doi.org/10.1117/12.2211565

KEYWORDS: Carbon dioxide lasers, Laser drilling, Silica, Laser ablation, Pulsed laser operation, Glasses, Gas lasers, Dielectrics, Infrared radiation, Laser development, Laser processing, Capacitance, Transformers, Attenuators, Power supplies

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Proceedings Article | 29 February 2016 Paper

Paper

Hard-tissue drilling by short-pulse CO2 laser with controllable pulse-tail energy

Kazuyuki Uno, Tatsufumi Sasaki, Takuya Yamamoto, Tetsuya Akitsu, Takahisa Jitsuno

Proceedings Volume 9692, 96920K (2016) https://doi.org/10.1117/12.2211557

KEYWORDS: Carbon dioxide lasers, Laser dentistry, Laser ablation, Pulsed laser operation, Laser drilling, Laser tissue interaction, Gas lasers, Dentistry, Absorption, Teeth, Attenuators, Capacitance, Tissues, Transformers, Control systems

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Proceedings Article | 1 May 2015 Paper

Paper

World's largest high energy petawatt laser LFEX as a user's facility

H. Shiraga, N. Miyanaga, J. Kawanaka, S. Tokita, T. Jitsuno, Y. Nakata, S. Fujioka, H. Azechi

Proceedings Volume 9515, 95150S (2015) https://doi.org/10.1117/12.2181654

KEYWORDS: Optical amplifiers, Picosecond phenomena, Mirrors, Fusion energy, Physics, Pulsed laser operation, Fiber amplifiers, Diffraction gratings, Laser energy, Laser irradiation

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Proceedings Article | 4 March 2015 Paper

Paper

Glass drilling by longitudinally excited CO2 laser with short laser pulse

Kazuyuki Uno, Takuya Yamamoto, Tetsuya Akitsu, Takahisa Jitsuno

Proceedings Volume 9350, 93501E (2015) https://doi.org/10.1117/12.2077924

KEYWORDS: Pulsed laser operation, Carbon dioxide lasers, Glasses, Laser drilling, Laser ablation, Silica, Laser processing, Capacitance, Dielectrics, Gas lasers

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Proceedings Article | 18 November 2014 Paper

Paper

Longitudinally excited CO2 laser with tail-free short pulse

Kazuyuki Uno, Kazuma Dobashi, Tetsuya Akitsu, Takahisa Jitsuno

Proceedings Volume 9266, 92661U (2014) https://doi.org/10.1117/12.2071059

KEYWORDS: Carbon dioxide lasers, Pulsed laser operation, Carbon dioxide, Electrodes, Capacitance, Laser systems engineering, Laser development, Helium, Laser energy, Gas lasers

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Proceedings Article | 31 October 2014 Paper

Paper

Detection of the laser-damage onset in optical coatings by the photothermal-deflection method

Katsuhiro Mikami, Semyon Papernov, Shinji Motokoshi, Stephen Jacobs, Takahisa Jitsuno

Proceedings Volume 9237, 923721 (2014) https://doi.org/10.1117/12.2068234

KEYWORDS: Absorption, Laser induced damage, Excitons, Contamination, Pulsed laser operation, Laser irradiation, Damage detection, Silica, Color centers, Laser optics

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Proceedings Article | 22 September 2014 Paper

Paper

Investigation of electric field formed in a multilayer mirror under simultaneous irradiation of two wavelengths

Muneo Sugiura, Koichi Tamura, Mitsunobu Kobiyama, Shinji Motokoshi, Takahisa Jitsuno

Proceedings Volume 9238, 923804 (2014) https://doi.org/10.1117/12.2073638

KEYWORDS: Mirrors, Multilayers, High power lasers, Reflectivity, Laser induced damage, Laser damage threshold, Solids, Cobalt, Laser applications, Laser systems engineering

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Proceedings Article | 22 September 2014 Paper

Paper

Progress in research on laser damage mechanisms and contamination problem

T. Jitsuno, H. Murakami, K. Kato, E. Sato, K. Mikami, S. Motokoshi, N. Miyanaga, H. Azechi

Proceedings Volume 9238, 923802 (2014) https://doi.org/10.1117/12.2073663

KEYWORDS: Contamination, Optical coatings, Laser induced damage, Laser systems engineering, Dielectrics, Nitrogen, Pulsed laser operation, Silica, Temperature metrology, Mirrors

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Proceedings Article | 18 February 2014 Paper

Paper

Longitudinally excited CO2 laser with short laser pulse for hard tissue drilling

Kazuyuki Uno, Hiroyuki Hayashi, Tetsuya Akitsu, Takahisa Jitsuno

Proceedings Volume 8929, 89290L (2014) https://doi.org/10.1117/12.2038325

KEYWORDS: Carbon dioxide lasers, Pulsed laser operation, Laser drilling, Laser tissue interaction, Laser dentistry, Natural surfaces, Absorption, Output couplers, Ceramics, Transformers

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Proceedings Article | 14 November 2013 Paper

Paper

A theoretical analysis for temperature dependences of laser-induced damage threshold

K. Mikami, S. Motokoshi, T. Somekawa, T. Jitsuno, M. Fujita, K. Tanaka

Proceedings Volume 8885, 88851T (2013) https://doi.org/10.1117/12.2030180

KEYWORDS: Picosecond phenomena, Laser induced damage, Silica, Optical coatings, Temperature metrology, Laser damage threshold, Ionization, Pulsed laser operation, Laser applications, Nonlinear dynamics

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Proceedings Article | 19 July 2013 Paper

Paper

Recent progresses on insights of laser damage mechanisms and influence of contamination in optics

T. Jitsuno, H. Murakami, K. Kato, E. Sato, K. Mikami, S. Motokoshi, N. Miyanaga, H. Azechi

Proceedings Volume 8786, 87860B (2013) https://doi.org/10.1117/12.2021026

KEYWORDS: Contamination, Laser induced damage, Dielectrics, Optical coatings, Laser systems engineering, Pulsed laser operation, Mirrors, Temperature metrology, Optical components, Laser applications

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Proceedings Article | 19 July 2013 Paper

Paper

Laser-induced damage thresholds at different temperature for optical devices

Katsuhiro Mikami, Shinji Motokoshi, Toshihiro Somekawa, Takahisa Jitsuno, Masayuki Fujita, Kazuo Tanaka

Proceedings Volume 8786, 87861J (2013) https://doi.org/10.1117/12.2019870

KEYWORDS: Laser induced damage, Laser damage threshold, Picosecond phenomena, Silica, Pulsed laser operation, Glasses, Refractive index, Ionization, Temperature metrology, Laser systems engineering

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Proceedings Article | 4 December 2012 Paper

Paper

Role of oxidizing agent: thin film formation by photo-oxidizing silicone oil for vacuum UV rays transmittance and high hardness

M. Murahara, Y. Sato, T. Jitsuno, Y. Okamoto

Proceedings Volume 8530, 85300S (2012) https://doi.org/10.1117/12.977393

KEYWORDS: Silicon, Oxygen, Silicon films, Ultraviolet radiation, Thin films, Lamps, Carbon dioxide, Vacuum ultraviolet, Luminescence, Transmittance

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Proceedings Article | 4 December 2012 Paper

Paper

Temperature dependence of laser-induced damage thresholds by short pulse laser

Katsuhiro Mikami, Shinji Motokoshi, Toshihiro Somekawa, Takahisa Jitsuno, Masayuki Fujita, Kazuo Tanaka

Proceedings Volume 8530, 853005 (2012) https://doi.org/10.1117/12.976275

KEYWORDS: Laser induced damage, Laser damage threshold, Pulsed laser operation, Picosecond phenomena, Silica, Glasses, Dielectrics, Temperature metrology, Nd:YAG lasers, Coating

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Proceedings Article | 4 December 2012 Paper

Paper

Influences of oil-contamination on LIDT and optical properties in dielectric coatings

H. Murakami, T. Jitsuno, S. Motokoshi, E. Sato, K. Mikami, K. Kato, T. Kawasaki, Y. Nakata, N. Sarukura, T. Shinizu, H. Shiraga, N. Miyanaga, H. Azechi

Proceedings Volume 8530, 853024 (2012) https://doi.org/10.1117/12.977705

KEYWORDS: Contamination, Optical coatings, Mirrors, Dielectrics, Nitrogen, Optical properties, Dielectric mirrors, Laser induced damage, Silica, Metals

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Proceedings Article | 23 November 2011 Paper

Paper

Temperature dependences of fluorescence characteristic for Nd/Cr:YAG materials

Yoshiyuki Honda, Minoru Yoshida, Shinji Motokoshi, Kana Fujioka, Takahisa Jitsuno, Masahiro Nakatsuka

Proceedings Volume 8190, 819014 (2011) https://doi.org/10.1117/12.899047

KEYWORDS: Luminescence, Absorption, Ceramics, Energy transfer, Chromium, Ions, Ultraviolet radiation, Transmittance, Nd:YAG lasers, YAG lasers

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Proceedings Article | 23 November 2011 Paper

Paper

Laser-induced damage thresholds of optical coatings at different temperature

K. Mikami, S. Motokoshi, M. Fujita, T. Jitsuno, K. Tanaka

Proceedings Volume 8190, 81900A (2011) https://doi.org/10.1117/12.899033

KEYWORDS: Laser damage threshold, Silica, Dielectrics, Laser induced damage, Glasses, Optical coatings, Metals, Magnesium fluoride, Plasma, Temperature metrology

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Proceedings Article | 23 November 2011 Paper

Paper

Database on damage thresholds of picoseconds pulse for HR coatings

Shinji Motokoshi, Kota Kato, Tomohiro Somekawa, Katsuhiro Mikami, Eiji Sato, Takahisa Jitsuno

Proceedings Volume 8190, 81900I (2011) https://doi.org/10.1117/12.899275

KEYWORDS: Laser damage threshold, Picosecond phenomena, Optical coatings, Databases, Pulsed laser operation, Laser applications, Laser systems engineering, Laser induced damage, Laser development, Laser optics

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Proceedings Article | 7 December 2010 Paper

Paper

Plasma pre-treatment effect for photo-oxidized coating and adhesion to optical glass surface

Yuji Sato, Masataka Murahara, Takahisa Jitsuno, Yoshiaki Okamoto

Proceedings Volume 7842, 784224 (2010) https://doi.org/10.1117/12.867860

KEYWORDS: Plasma, Glasses, Silica, Adhesives, Silicon, Plasma treatment, Chemical species, Coating, Copper, Excimers

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Proceedings Article | 6 December 2010 Paper

Paper

Oil-contamination problem in large-scale pulse-compressor

T. Jitsuno, H. Murakami, S. Motokoshi, E. Saato, K. Mikami, K. Kato, T. Kawasaki, Y. Nakata, N. Sarukura, T. Shinizu, H. Shiraga, N. Miyanaga, H. Azechi

Proceedings Volume 7842, 784221 (2010) https://doi.org/10.1117/12.867528

KEYWORDS: Contamination, Silica, Mirrors, Optical components, Laser damage threshold, Optical coatings, Pulsed laser operation, Laser applications, Laser induced damage, Photography

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Proceedings Article | 29 November 2010 Paper

Paper

Temperature dependence of nonlinear optical phenomena in silica glasses

K. Mikami, S. Motokoshi, M. Fujita, T. Jitsuno, M. Murakami

Proceedings Volume 7842, 78420X (2010) https://doi.org/10.1117/12.867240

KEYWORDS: Refractive index, Silica, Glasses, Temperature metrology, Laser damage threshold, Laser induced damage, Acoustics, Transmittance, Laser scattering, Nd:YAG lasers

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Proceedings Article | 31 December 2009 Paper

Paper

Laser-induced damage thresholds in silica glasses at different temperature

K. Mikami, S. Motokoshi, M. Fujita, T. Jitsuno, J. Kawanaka, R. Yasuhara

Proceedings Volume 7504, 75041R (2009) https://doi.org/10.1117/12.836350

KEYWORDS: Silica, Laser induced damage, Laser damage threshold, Glasses, Temperature metrology, Nd:YAG lasers, Laser systems engineering, Laser engineering, Cryogenics, High power lasers

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Proceedings Article | 30 December 2008 Paper

Paper

Low stress ion-assisted coatings on fused silica substrates for large aperture laser pulse compression gratings

Douglas Smith, Mike McCullough, Claire Smith, Takuya Mikami, Takahisa Jitsuno

Proceedings Volume 7132, 71320E (2008) https://doi.org/10.1117/12.817336

KEYWORDS: Silica, Diffraction gratings, Ions, Optical design, Optical coatings, Wavefronts, Laser damage threshold, Pulsed laser operation, Picosecond phenomena, Multilayers

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Proceedings Article | 30 December 2008 Paper

Paper

Formation of a photo-oxidized protective thin film with waterproof and high-power laser tolerance properties

Masataka Murahara, Yuji Sato, Takayuki Funatsu, Takahisa Jitsuno, Yoshiaki Okamoto

Proceedings Volume 7132, 71320K (2008) https://doi.org/10.1117/12.804435

KEYWORDS: Silica, Silicon, Tolerancing, Glasses, Lamps, Oxygen, Excimers, Thin films, Atmospheric plasma, Plasma

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Proceedings Article | 21 February 2005 Paper

Paper

Enhancement of surface damage resistance by selective chemical removal of CeO₂

Tomosumi Kamimura, Shinji Motokoshi, Takayasu Sakamoto, Takahisa Jitsuno, Haruya Shiba, Shigenori Akamatsu, Hideo Horibe, Takayuki Okamoto, Kunio Yoshida

Proceedings Volume 5647, (2005) https://doi.org/10.1117/12.585219

KEYWORDS: Surface finishing, Laser induced damage, Polishing, Laser damage threshold, Silica, Resistance, Contamination, Laser applications, Cerium, Surface roughness

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Proceedings Article | 10 June 2004 Paper

Paper

Enhancement of surface-damage resistance by removing subsurface damage in fused silica

Tomosumi Kamimura, Shigenori Akamatsu, Masashi Yamamoto, Ichiro Yamato, Haruya Shiba, Shinji Motokoshi, Takayasu Sakamoto, Takahisa Jitsuno, Takayuki Okamoto, Kunio Yoshida

Proceedings Volume 5273, (2004) https://doi.org/10.1117/12.524961

KEYWORDS: Surface finishing, Polishing, Silica, Etching, Ion beams, Resistance, Laser damage threshold, Wet etching, Laser induced damage, Surface roughness

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Proceedings Article | 26 March 2002 Paper

Paper

Longitudinally excited F2 laser and gain measurement at a total gas pressure of 40 Torr

M. El-Osealy, Takuya Ido, Kenshi Nakamura, Takahisa Jitsuno, T. Goto

Proceedings Volume 4747, (2002) https://doi.org/10.1117/12.460154

KEYWORDS: Pulsed laser operation, Optical amplifiers, Oscillators, Gas lasers, Absorption, Capacitors, Molecular lasers, Electrodes, Vacuum ultraviolet, Time metrology

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Proceedings Article | 26 March 2002 Paper

Paper

Gain measurements of Ar2* excimer formed by high-pressure homogeneous discharge using plasma electrode

Kenshi Nakamura, Y. Ooguchi, N. Umegaki, T. Goto, Takahisa Jitsuno, T. Kitamura, M. Takasaki, Shiro Horiguchi

Proceedings Volume 4747, (2002) https://doi.org/10.1117/12.460155

KEYWORDS: Electrodes, Plasma, Argon, Luminescence, Excimers, Excimer lasers, Optical testing, Oscillators, Optical amplifiers, Ceramics

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Proceedings Article | 21 December 2001 Paper

Paper

Neutron enhancement and related recent studies on the fast ignitor at ILE Osaka University

Yoneyoshi Kitagawa, Ryosuke Kodama, Kazuo Tanaka, Yusuke Tohyama, Shin Akamatsu, Yasuhiko Sentoku, Hisanori Fujita, Takahisa Jitsuno, Hiroaki Nishimura, Shuji Sakabe, Yasukazu Izawa, Kunioki Mima, Tatsuhiko Yamanaka

Proceedings Volume 4510, (2001) https://doi.org/10.1117/12.451285

KEYWORDS: Magnetism, Plasma, Photonic integrated circuits, Ions, Pulsed laser operation, Optical amplifiers, Solids, Optical simulations, Fusion energy, Magnesium

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Proceedings Article | 23 April 2001 Paper

Paper

Model experiments of fast ignition with coaxial high-power laser beams

Katsumasa Fujita, A. Sunahara, Kazuo Tanaka, Nobuhiko Izumi, Takahisa Jitsuno, Noriaki Miyanaga, Takeshi Miyakoshi, H. Otani, Mitsuhiro Fukao, Manabu Heya, Yoshihiro Ochi, Yoneyoshi Kitagawa, Ryosuke Kodama, Kunioki Mima, Hiroaki Nishimura, Takayoshi Norimatsu, Yasuhiko Sentoku, Hideaki Takabe, Tatsuhiko Yamanaka

Proceedings Volume 4424, (2001) https://doi.org/10.1117/12.425618

KEYWORDS: Plasma, X-rays, Fusion energy, Laser drilling, Pulsed laser operation, Picosecond phenomena, X-ray imaging, High power lasers, Solids, Spectrometers

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Proceedings Article | 12 April 2001 Paper

Paper

Optical thin films grown by surface chemical reaction for high-power lasers

Shin-ichi Zaitsu, Shinji Motokoshi, Takahisa Jitsuno, Masahiro Nakatsuka, Tatsuhiko Yamanaka

Proceedings Volume 4347, (2001) https://doi.org/10.1117/12.425045

KEYWORDS: Laser induced damage, Chemical reactions, Laser damage threshold, Molecules, Thin films, Coating, Thin film growth, High power lasers, Resistance, Crystals

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Proceedings Article | 6 November 2000 Paper

Paper

UV laser ablative shaping of optical surface using ArF laser

Takahisa Jitsuno, Keiu Tokumura, Hisashi Tamamura

Proceedings Volume 4088, (2000) https://doi.org/10.1117/12.405709

KEYWORDS: Wavefronts, Laser ablation, Single mode fibers, Optical components, Spherical lenses, Surface roughness, Semiconductor lasers, Collimation, Optical fibers, Wavefront sensors

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Proceedings Article | 6 November 2000 Paper

Paper

Laser ablation process of quartz material using F2 laser

Takahisa Jitsuno, Hironari Mikata, Keiu Tokumura, Nobu Kuzuu, Naoyuki Kitamura, Yoshizo Kawaguchi

Proceedings Volume 4088, (2000) https://doi.org/10.1117/12.405729

KEYWORDS: Quartz, Absorption, Laser ablation, Glasses, Pulsed laser operation, Laser processing, Transmittance, Vacuum ultraviolet, Silica, Neodymium

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Proceedings Article | 3 April 2000 Paper

Paper

Optical thin films grown by surface chemical reaction for high-power lasers

Shin-ichi Zaitsu, Shinji Motokoshi, Takahisa Jitsuno, Masahiro Nakatsuka, Tatsuhiko Yamanaka

Proceedings Volume 3889, (2000) https://doi.org/10.1117/12.380929

KEYWORDS: Laser damage threshold, Laser induced damage, Chemical reactions, Thin films, Thin film growth, High power lasers, Molecules, Refractive index, Crystals, Signal detection

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Proceedings Article | 3 April 2000 Paper

Paper

Coaxially excited gas lasers: toward the vacuum ultraviolet region

Mohamed El-Oseary, Takahisa Jitsuno, Masahiro Nakatsuka, Yasunari Ohoguchi, Takuya Ido, Kenshi Nakamura, Shiro Horiguchi

Proceedings Volume 3889, (2000) https://doi.org/10.1117/12.380858

KEYWORDS: Gas lasers, Capacitors, Excimer lasers, Nitrogen, Electrodes, Ionization, Pulsed laser operation, Ceramics, Ultraviolet radiation, Laser development

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Proceedings Article | 3 April 2000 Paper

Paper

Gray-tracking susceptibility in KTiOPO4 crystals

Shinji Motokoshi, Takahisa Jitsuno, Masahiro Nakatsuka, Yasukazu Izawa

Proceedings Volume 3889, (2000) https://doi.org/10.1117/12.380944

KEYWORDS: Crystals, Absorption, Annealing, Transmittance, Ferroelectric materials, Nonlinear crystals, Nd:YAG lasers, Contamination, Laser crystals, Process control

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Proceedings Article | 3 March 2000 Paper

Paper

Evaluation of KTiOPO4 crystals for high-power laser

Shinji Motokoshi, Takahisa Jitsuno, Masahiro Nakatsuka, Yasukazu Izawa

Proceedings Volume 3902, (2000) https://doi.org/10.1117/12.379302

KEYWORDS: Crystals, Absorption, Ferroelectric materials, Laser crystals, Annealing, Nonlinear crystals, Transmittance, Nd:YAG lasers, High power lasers, Harmonic generation

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Proceedings Article | 3 March 2000 Paper

Paper

Laser-induced damage in nonlinear crystals on irradiation direction and polarization

Hidetsugu Yoshida, Takahisa Jitsuno, Hisanori Fujita, Masahiro Nakatsuka, Tomosumi Kamimura, Masashi Yoshimura, Takatomo Sasaki, Akio Miyamoto, Kunio Yoshida

Proceedings Volume 3902, (2000) https://doi.org/10.1117/12.379300

KEYWORDS: Crystals, Nonlinear crystals, Laser damage threshold, Laser crystals, Laser induced damage, Polarization, Laser irradiation, Frequency converters, Ferroelectric materials, High power lasers

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Proceedings Article | 7 February 2000 Paper

Paper

Coaxially excited pulsed-gas lasers for precise machining

Noriaki Nishi, Yukio Nakajima, Takahisa Jitsuno

Proceedings Volume 3888, (2000) https://doi.org/10.1117/12.377090

KEYWORDS: Carbon dioxide lasers, Gas lasers, Ceramics, Electrodes, Pulsed laser operation, Switches, Glasses, Laser processing, Laser development, Continuous wave operation

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Proceedings Article | 1 February 2000 Paper

Paper

F2 laser ablation process of silica glass

Hironari Mikata, Takahisa Jitsuno, Keiu Tokumura, Shinji Motokoshi, Masahiro Nakatsuka

Proceedings Volume 3885, (2000) https://doi.org/10.1117/12.376989

KEYWORDS: Silica, Glasses, Absorption, Laser ablation, Laser processing, Pulsed laser operation, Excimer lasers, Transmittance, Neodymium, Surface roughness

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Proceedings Article | 1 February 2000 Paper

Paper

UV laser ablative figuring of precise optics

Keiu Tokumura, Takahisa Jitsuno, Masahiro Nakatsuka, Geun-Young Yoon, Hisashi Tamamura

Proceedings Volume 3885, (2000) https://doi.org/10.1117/12.376973

KEYWORDS: Laser ablation, Surface roughness, Wavefronts, Polymethylmethacrylate, Wavefront distortions, Adaptive optics, Ultraviolet radiation, UV optics, Precision optics, Excimer lasers

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Proceedings Article | 11 January 2000 Paper

Paper

Multiwedge array for uniform target irradiation

Masaru Iwasaki, Takahisa Jitsuno, Noriaki Nishi, Shinji Motokoshi, Masahiro Nakatsuka

Proceedings Volume 3886, (2000) https://doi.org/10.1117/12.375134

KEYWORDS: Modulation, Diffraction, Plasma, Spherical lenses, Transmittance, Beam shaping, Laser welding, Laser systems engineering, Laser irradiation, Beam controllers

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Proceedings Article | 23 July 1999 Paper

Paper

Progress of direct drive laser fusion research at ILE, Osaka

Kunioki Mima, Hiroshi Azechi, Hisanori Fujita, Nobuhiko Izumi, Takahisa Jitsuno, Yoshinori Kato, Tadashi Kanabe, Yoneyoshi Kitagawa, Ryosuke Kodama, Noriaki Miyanaga, Mitsuo Nakai, Masahiro Nakatsuka, Sadao Nakai, Hideo Nagatomo, Takayoshi Norimatsu, Katsunobu Nishihara, Hiroaki Nishimura, Hiroyuki Shiraga, Hideaki Takabe, Tatsuhiko Yamanaka

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354229

KEYWORDS: Laser welding, Laser systems engineering, Plasma, Solid state lasers

Read Abstract +

Proceedings Article | 23 July 1999 Paper

Paper

Laser ablative figuring of optical elements for phase control

Takahisa Jitsuno, Keiu Tokumura, Masahiro Nakatsuka

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354193

KEYWORDS: Wavefronts, Optical components, Wavefront distortions, Spherical lenses, Beam controllers, Control systems, Laser ablation, Excimer lasers, Computing systems, Interferometers

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Proceedings Article | 23 July 1999 Paper

Paper

Laser-induced damage of optical coatings grown with surface chemical reaction

Shin-ichi Zaitsu, Shinji Motokoshi, Takahisa Jitsuno, Tatsuhiko Yamanaka

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354234

KEYWORDS: Laser damage threshold, Chemical reactions, Laser induced damage, Optical coatings, Refractive index, Molecules, Antireflective coatings, Thin film growth, Thin films, Adsorption

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Proceedings Article | 23 July 1999 Paper

Paper

Development of LD-pumped 10 J x 10 Hz Nd:glass slab laser

Hiroki Matsui, Takeyoshi Egushi, Tadashi Kanabe, Takahisa Jitsuno, Norimitsu Hiura, Hiroyuki Furukawa, Masanobu Yamanaka, Masahiro Nakatsuka, Yasukazu Izawa, Sadao Nakai, Takeshi Kanzaki, Hirofumi Miyajima, Masahiro Miyamoto, Hirofumi Kan

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354184

KEYWORDS: Amplifiers, Mirrors, Fusion energy, Laser development, Energy efficiency, Semiconductor lasers, Polarizers, Glasses, Oscillators, Diode pumped solid state lasers

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Proceedings Article | 23 July 1999 Paper

Paper

Bulk laser damage in KDP crystal as a function of laser irradiation direction, polarization, and wavelength

Hidetsugu Yoshida, Takahisa Jitsuno, Hisanori Fujita, Masahiro Nakatsuka, Masashi Yoshimura, Takatomo Sasaki, Kunio Yoshida

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354196

KEYWORDS: Crystals, Laser damage threshold, Laser crystals, Laser irradiation, Polarization, Bulk lasers, Nonlinear crystals, Laser induced damage, Neodymium, Laser systems engineering

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Proceedings Article | 23 July 1999 Paper

Paper

Laser-induced damage of silica glass at 1064 nm and its higher harmonics

Kunio Yoshida, Nobu Kuzuu, Takahisa Jitsuno, Hidetsugu Yoshida, Tomosumi Kamimura

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354233

KEYWORDS: Absorption, Silica, Laser induced damage, Glasses, Excimer lasers, Chlorine, Ultraviolet radiation, Laser damage threshold, Silicon, Molecules

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Proceedings Article | 14 September 1998 Paper

Paper

Development of the diode-pumped solid state laser and its application to laser fusion and industry

Sadao Nakai, Yasukazu Izawa, Masahiro Nakatsuka, Masanobu Yamanaka, Yasuji Kozaki, Takahisa Jitsuno, Tadashi Kanabe, Noriaki Miyanaga, E. Yoshida, Kouji Tsubakimoto, Hiromitsu Kiriyama, Hiroki Matsui, Hiroshi Azechi, Hideaki Takabe, Tatsuhiko Yamanaka, Kunioki Mima, Shinji Motokoshi, Hiroyuki Furukawa, Chiyoe Yamanaka, Hirofumi Kan, Teruo Hiruma

Proceedings Volume 3343, (1998) https://doi.org/10.1117/12.321577

KEYWORDS: Laser welding, Diode pumped solid state lasers, High power lasers, Optical amplifiers, Laser applications, Laser development, Fusion energy, Semiconductor lasers, Solid state lasers, Physics

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Proceedings Article | 8 December 1997 Paper

Paper

Development of a large-aperture deformable mirror for wavefront control

Geun-Young Yoon, Takahisa Jitsuno, Masahiro Nakatsuka, Yoshiaki Kato

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294256

KEYWORDS: Actuators, Deformable mirrors, Wavefronts, Mirrors, Reflectivity, X-ray lasers, Wavefront aberrations, Laser systems engineering, Polishing, Adaptive optics

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Proceedings Article | 8 December 1997 Paper

Paper

Wavefront control of optical components by laser-ablative figuring

Takahisa Jitsuno, Tomoyoshi Akashi, Masahiro Nakatsuka, Sadao Nakai, Keiu Tokumura

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294329

KEYWORDS: Glasses, Laser ablation, Laser optics, Excimer lasers, Polymethylmethacrylate, Wavefronts, Modulation, Pulsed laser operation, Control systems, Optical components

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Proceedings Article | 8 December 1997 Paper

Paper

High-power CPA Nd:glass laser development at ILE

Hisanori Fujita, Yoshiaki Kato, Yoneyoshi Kitagawa, Ryosuke Kodama, Tadashi Kanabe, Takahisa Jitsuno, Hiroyuki Shiraga, Shuji Sakabe

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294338

KEYWORDS: Optical amplifiers, Neodymium glass lasers, High power lasers, Laser development, Glasses, Fusion energy, Oscillators, Laser glasses, Picosecond phenomena, Mirrors

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Proceedings Article | 8 December 1997 Paper

Paper

Development of a liquid crystal polarization control plate aligned by photoisomerization of azo dye

Kouji Tsubakimoto, Keiichi Sueda, Noriaki Miyanaga, Takahisa Jitsuno, Masahiro Nakatsuka

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294359

KEYWORDS: Liquid crystals, Molecules, Polarization control, Polarization, Speckle, Absorption, Laser damage threshold, Speckle pattern, Ultraviolet radiation, Polymers

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Proceedings Article | 1 November 1997 Paper

Paper

Generation of intense x-ray laser radiation at 8 nm in Ni-like Nd ions

Yoshiaki Kato, Shiji Wang, Hiroyuki Daido, Zunqi Lin, Guoping Zhang, Yuan Gu, Guanlong Huang, Huajing Tang, Takeomi Imani, Syuhei Sezaki, Shingo Hirose, Kensuki Murai, Geun-Young Yoon, Takahisa Jitsuno, Masaru Takagi, Hisataka Takenaka, Kunioki Mima, Ximing Deng

Proceedings Volume 3156, (1997) https://doi.org/10.1117/12.293372

KEYWORDS: X-ray lasers, X-rays, Ions, Neodymium, Deformable mirrors, Mirrors, Picosecond phenomena, Aspheric lenses, Plasma, Cylindrical lenses

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Proceedings Article | 8 December 1995 Paper

Paper

Beam profile control of line focus for x-ray laser experiment

Geun-Young Yoon, Takahisa Jitsuno, Masahiro Nakatsuka, Hiroyuki Daido, Yoshiaki Kato, Sadao Nakai

Proceedings Volume 2633, (1995) https://doi.org/10.1117/12.228329

KEYWORDS: Deformable mirrors, Wavefronts, Actuators, X-ray lasers, Beam shaping, Diffraction, Beam controllers, Mirrors, Control systems, Laser welding

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Proceedings Article | 8 December 1995 Paper

Paper

Multilens array for GEKKO XII glass laser system with circular aperture spherical element lens

Takahisa Jitsuno, Noriaki Nishi, Kouji Tsubakimoto, Masahiro Nakatsuka, Sadao Nakai

Proceedings Volume 2633, (1995) https://doi.org/10.1117/12.228320

KEYWORDS: Spherical lenses, Optical testing, Laser systems engineering, Glasses, Laser glasses, Diffraction, Plasma, Modulation, Thermal effects, Laser irradiation

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Proceedings Article | 8 December 1995 Paper

Paper

Improvement of laser irradiation uniformity in GEKKO XII glass laser system

Noriaki Miyanaga, Shinjiro Matsuoka, Akinobu Ando, Kouji Tsubakimoto, Shinji Amano, Masahiro Nakatsuka, Tadashi Kanabe, Takahisa Jitsuno, Sadao Nakai

Proceedings Volume 2633, (1995) https://doi.org/10.1117/12.228321

KEYWORDS: Spherical lenses, Laser irradiation, Glasses, Laser glasses, Laser systems engineering, Absorption, Phase modulation, Picosecond phenomena, Optical testing, Modulation

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Proceedings Article | 1 May 1993 Paper

Paper

Evaluation of irradiation uniformity on spherical target using angularly dispersed, partially coherent light in direct-drive laser fusion

Kouji Tsubakimoto, Masahiro Nakatsuka, Noriaki Miyanaga, Takahisa Jitsuno, Tadashi Kanabe, Hirohiko Nakano, Sadao Nakai

Proceedings Volume 1870, (1993) https://doi.org/10.1117/12.154484

KEYWORDS: Spherical lenses, Visibility, Laser systems engineering, Optical testing, Laser welding, Speckle, Diffraction, Light, Near field, Speckle pattern

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Proceedings Article | 1 May 1993 Paper

Paper

Aspherical multilens array for uniform target irradiation

Noriaki Nishi, Takahisa Jitsuno, Kouji Tsubakimoto, Masakatsu Murakami, Masahiro Nakatsuka, Katsunobu Nishihara, Sadao Nakai

Proceedings Volume 1870, (1993) https://doi.org/10.1117/12.154475

KEYWORDS: Diffraction, Spherical lenses, Modulation, Aspheric lenses, Beam shaping, Lens design, Control systems, Absorption, Plasma, Light sources

Read Abstract +

Proceedings Article | 1 April 1991 Paper

Paper

Beam control and power conditioning of GEKKO glass laser system

Masahiro Nakatsuka, Takahisa Jitsuno, Tadashi Kanabe, Shinji Urushihara, Noriaki Miyanaga, Sadao Nakai

Proceedings Volume 1411, (1991) https://doi.org/10.1117/12.43624

KEYWORDS: Optical amplifiers, Control systems, Laser systems engineering, Beam controllers, Lamps, Capacitors, Pulsed laser operation, Glasses, Laser glasses, Laser amplifiers

Read Abstract +

Showing 5 of 73 publications

Proceedings Volume Editor (7)

SPIE Conference Volume | 4 November 2019

Pacific Rim Laser Damage 2019: Optical Materials for High-Power Lasers

SPIE Conference Volume | 7 August 2018

Pacific-Rim Laser Damage 2018: Optical Materials for High-Power Lasers

SPIE Conference Volume | 16 August 2017

Pacific Rim Laser Damage 2017: Optical Materials for High-Power Lasers

SPIE Conference Volume | 19 September 2016

Pacific Rim Laser Damage 2016: Optical Materials for High-Power Lasers

SPIE Conference Volume | 6 August 2015

Pacific Rim Laser Damage 2015: Optical Materials for High-Power Lasers

Showing 5 of 7 publications

Conference Committee Involvement (24)

Laser-Induced Damage in Optical Materials 2025

19 October 2025 | Rochester, NY, United States

Laser-Induced Damage in Optical Materials 2024

7 October 2024 | San Ramon, CA, United States

Laser-Induced Damage in Optical Materials 2023

18 September 2023 | Dublin/Livermore, California, United States

Laser-Induced Damage in Optical Materials 2022

18 September 2022 | Rochester, New York, United States

Laser-Induced Damage in Optical Materials 2021

12 October 2021 | Online Only, United States

Laser-induced Damage in Optical Materials 2020

14 September 2020 | Online Only, New York, United States

Pacific Rim Laser Damage 2020: Optical Materials for High Power Lasers

23 April 2020 | Yokohama, Japan

Laser-induced Damage in Optical Materials 2019

23 September 2019 | Broomfield (Boulder area), Colorado, United States

Pacific Rim Laser Damage 2019: Optical Materials for High Power Lasers

19 May 2019 | Qingdao, China

Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference

24 September 2018 | Boulder, Colorado, United States

Pacific Rim Laser Damage 2018: Optical Materials for High-Power Lasers

24 April 2018 | Yokohama, Japan

Laser-Induced Damage in Optical Materials 2017

24 September 2017 | Boulder, Colorado, United States

Pacific-Rim Laser Damage

21 May 2017 | Shanghai, China

Laser-Induced Damage in Optical Materials 2016

25 September 2016 | Boulder, Colorado, United States

Pacific Rim Laser Damage 2016: Optical Materials for High Power Lasers

19 May 2016 | Yokohama, Japan

Laser-Induced Damage in Optical Materials: 2015

28 September 2015 | Boulder, Colorado, United States

Pacific Rim Laser Damage 2015: Optical Materials for High Power Lasers

17 May 2015 | Jiading, Shanghai, China

Laser-Induced Damage in Optical Materials: 2014

15 September 2014 | Boulder, Colorado, United States

Pacific-rim Laser Damage

22 April 2014 | Yokohama, Japan

Laser Damage Symposium: XLV Annual Symposium on Optical Materials for High-Power Lasers

22 September 2013 | Boulder, Colorado, United States

Pacific Rim Laser Damage 2013: Optical Materials for High Power Lasers

19 May 2013 | Shanghai, China

Laser Damage Symposium XLIV: Annual Symposium on Optical Materials for High Power Lasers

23 September 2012 | Boulder, Colorado, United States

Pacific Rim Laser Damage: Optical Materials for High Power Lasers

6 November 2011 | Shanghai, China

Laser Damage Symposium XLIII: Annual Symposium on Optical Materials for High Power Lasers

18 September 2011 | Boulder, Colorado, United States

Showing 5 of 24 Conference Committees

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