Prof. Masanobu Haraguchi Profile

Prof. Masanobu Haraguchi

Professor at Tokushima Univ

SPIE Involvement:

Author

Publications (27)

Proceedings Article | 12 March 2024 Presentation

Highly efficient optical beats using laser chaos for THz waves

Fumiyoshi Kuwashima, Mona Jarrahi, Semih Cakmakyapan, Osamu Morikawa, Kazuyoshi Kurihara, Kenji Wada, Hideaki Kitahara, Takashi Furuya, Masanobu Haraguchi, Takeshi Moriyasu, Yuki Kawakami, Makoto Nakajima, Masahiko Tani

Proceedings Volume PC12885, PC1288501 (2024) https://doi.org/10.1117/12.3002192

KEYWORDS: Laser optics, Terahertz radiation, Chaos, Continuous wave operation, Semiconductor lasers, Plasmonics

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Proceedings Article | 11 October 2023 Presentation + Paper

Coupling structures between Nb2O5 and plasmonic waveguide for high-speed and wide-steering angle optical phased array

Maaya Tsukamoto, Shun Kamada, Toshihiro Okamoto, Kenzo Yamaguchi, Masanobu Haraguchi

Proceedings Volume 12653, 126530G (2023) https://doi.org/10.1117/12.2677237

KEYWORDS: Waveguides, Phased array optics, Plasmonic waveguides, Niobium, Beam steering, Antennas, Wave propagation, Dielectrics, Crosstalk, Power consumption

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Proceedings Article | 3 October 2023 Presentation + Paper

Optical phased array with high-speed and wide steering angle using organic EO polymer and inorganic waveguide structure

Shun Kamada, Maaya Tsukamoto, Toshihiro Okamoto, Masanobu Haraguchi, Akira Otomo

Proceedings Volume 12653, 126530B (2023) https://doi.org/10.1117/12.2677233

KEYWORDS: Waveguides, Antennas, Polarization, Plasmonic waveguides, Polymers, Polymer multimode waveguides, Niobium, Beam steering, Phased array optics, Crosstalk

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Proceedings Article | 3 October 2022 Poster + Paper

Optical geometry dependent scattering analysis of gold semi-shell structures using propagating surface plasmon polariton

Tomoki Watanabe, Toshihiro Okamoto, Kenzo Yamaguchi, Masanobu Haraguchi

Proceedings Volume 12197, 1219709 (2022) https://doi.org/10.1117/12.2632923

KEYWORDS: Gold, Light scattering, Surface plasmons, Scattering, Particles, Thin films, Silica, Self-assembled monolayers, Scanning electron microscopy, Glasses

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Proceedings Article | 27 October 2021 Paper

Design of AlN-subwavelength grating for deep ultraviolet wavelength reflector operating at 244 nm of wavelength

Yuusuke Takashima, Atsuki Sasada, Kentaro Nagamatsu, Masanobu Haraguchi, Yoshiki Naoi

Proceedings Volume 11926, 1192618 (2021) https://doi.org/10.1117/12.2616175

KEYWORDS: Deep ultraviolet, Reflectivity, Reflectors, Aluminum nitride, Polarization, Refractive index, Optical design, Finite-difference time-domain method, Ultraviolet radiation, Optical components

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Proceedings Article | 5 March 2021 Poster + Presentation

Plasmonic waveguide-based antenna for wide steering angle in the optical phased array

Shun Kamada, Toshihiro Okamoto, Masanobu Haraguchi, Akira Otomo

Proceedings Volume 11689, 116891G (2021) https://doi.org/10.1117/12.2574935

KEYWORDS: Antennas, Waveguides, Phased array optics, Plasmonics, Silicon, Polymers, Polymer multimode waveguides, Light wave propagation, Interfaces, Beam steering

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Proceedings Article | 22 August 2020 Poster + Presentation

Visible plasmonic perfect absorber based on titanium nitride metamaterial

Tomoki Watanabe, Meng-Ju Yu, Hao-Yu Lan, Masanobu Haraguchi, Yu-Jung Lu

Proceedings Volume 11462, 114622D (2020) https://doi.org/10.1117/12.2568276

KEYWORDS: Absorption, Metamaterials, Tin, Plasmonics, Titanium, Nanostructures, Titanium dioxide, Finite-difference time-domain method, Plasmons, Reflection

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Proceedings Article | 21 August 2020 Presentation + Paper

Magnetically tunable visible reflectivity utilizing the electron accumulation in indium-tin-oxide waveguide layer with subwavelength grating

Y. Okano, Y. Takashima, M. Haraguchi, Y. Naoi

Proceedings Volume 11467, 114671U (2020) https://doi.org/10.1117/12.2568382

KEYWORDS: Magnetic sensors, Sensors, Waveguides

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Proceedings Article | 3 September 2019 Paper

Ni subwavelength grating/SiO2/Ag based optical magnetic field sensor with normal incident geometry

Yuusuke Takashima, Kouhei Moriiwa, Masanobu Haraguchi, Yoshiki Naoi

Proceedings Volume 11089, 110891V (2019) https://doi.org/10.1117/12.2529017

KEYWORDS: Magnetic sensors, Sensors, Ferromagnetics

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Proceedings Article | 4 March 2019 Paper

Optical magnetic field sensor based on guided-mode resonance with Ni subwavelength grating/waveguide structure

Yuusuke Takashima, Masanobu Haraguchi, Yoshiki Naoi

Proceedings Volume 10928, 109281S (2019) https://doi.org/10.1117/12.2509490

KEYWORDS: Magnetic sensors, Waveguides, Sensors, Diffraction

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Proceedings Article | 17 September 2018 Presentation

Plasmonic resonator devices for integrated application (Conference Presentation)

Masanobu Haraguchi, Shun Kamada, Hiroyuki Okamoto, Toshihiro Okamoto, Salah El-Zohary, Kenzo Yamaguchi, Atsushi Mori

Proceedings Volume 10722, 107220K (2018) https://doi.org/10.1117/12.2320975

KEYWORDS: Resonators, Plasmonics, Sensors, Waveguides, Telecommunications, Surface plasmon polaritons, Modulators, Channel waveguides, Fabrication, Lithography

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Proceedings Article | 18 October 2017 Presentation

Plasmon resonance sensors for compact plasmonic integrated device (Conference Presentation)

Masanobu Haraguchi, Shun Kamada, Hiroyuki Okamoto, Toshihiro Okamoto, Salah El-Zohary

Proceedings Volume 10346, 103460B (2017) https://doi.org/10.1117/12.2275421

KEYWORDS: Plasmonics, Sensors, Plasmons, Surface plasmon polaritons, Channel waveguides, Waveguides, Spiral phase plates, Plasmonic sensors, Diffraction, Infrared sensors

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Proceedings Article | 25 August 2017 Paper

Resonance modes in unbalanced Mach-Zehnder interferometers embedded in plasmonic waveguides

Shun Kamada, Toshihiro Okamoto, Masanobu Haraguchi

Proceedings Volume 10346, 1034622 (2017) https://doi.org/10.1117/12.2270594

KEYWORDS: Mach-Zehnder interferometers, Plasmonic waveguides, Resonators, Plasmonics, Finite-difference time-domain method, Plasmons, Integrated circuits, Optical modulators, Sensors, Numerical simulations

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Proceedings Article | 31 October 2016 Paper

A simple and low cost method to fabricate well controllable silicon nanowires based on electrostatic adsorption of PS nanospheres

Salah El-Zohary, Yusuke Iguchi, Toshihiro Okamoto, Masanobu Haraguchi

Proceedings Volume 10019, 100190W (2016) https://doi.org/10.1117/12.2246604

KEYWORDS: Nanowires, Silver, Silicon, Optoelectronics, Adsorption, Picosecond phenomena, Etching, Scanning electron microscopy, Control systems, Semiconducting wafers

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SPIE Journal Paper | 24 June 2015

Influence of low-contrast subwavelength grating shape on polarization characteristics of GaN-based light-emitting diode emissions

Yuusuke Takashima, Ryo Shimizu, Masanobu Haraguchi, Yoshiki Naoi

OE, Vol. 54, Issue 06, 067112, (June 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.6.067112

KEYWORDS: Polarization, Light emitting diodes, Silica, Gallium nitride, Dielectric polarization, Electromagnetism, Finite-difference time-domain method, Transmittance, Refractive index, Blue light emitting diodes

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SPIE Journal Paper | 3 February 2015 Open Access

Heterojunction of poly (o-toluidine) and silicon nanowires

Salah E. El-Zohary, Mohamed Shenashen, Ashraf Haleem, Akinori Tsuji, Toshihiro Okamoto, Masanobu Haraguchi

JNP, Vol. 9, Issue 01, 093093, (February 2015) https://doi.org/10.1117/12.10.1117/1.JNP.9.093093

KEYWORDS: Heterojunctions, Silicon, Polymers, Diodes, Scanning electron microscopy, Polymerization, FT-IR spectroscopy, Resistance, Semiconducting wafers, Nanowires

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Proceedings Article | 28 August 2014 Paper

Heterojunction of nano-poly (O-toluidine) on silicon nanowires is investigated as a candidate heterojunction diode

Salah El-Zohary, M. Shenashen, Akinori Tsuji, T. Okamoto, M. Haraguchi

Proceedings Volume 9170, 917006 (2014) https://doi.org/10.1117/12.2062687

KEYWORDS: Heterojunctions, Silicon, Diodes, Nanolithography, Scanning electron microscopy, Polymers, Etching, Polymerization, Semiconducting wafers, Nanowires

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SPIE Journal Paper | 2 June 2014 Open Access

Errata: Resonance-based integrated plasmonic nanosensor for lab-on-chip applications

Salah El-Zohary, Abdulilah Azzazi, Hiroyuki Okamoto, Toshihiro Okamoto, Masanobu Haraguchi, Mohamed Swillam

JNP, Vol. 8, Issue 01, 089997, (June 2014) https://doi.org/10.1117/12.10.1117/1.JNP.8.089997

KEYWORDS: Plasmonics, Nanosensors, Physics, Control systems, Optics

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Proceedings Article | 19 February 2014 Paper

Design optimization and fabrication of plasmonic nano sensor

Salah El-Zohary, Abdulilah Azzazi, Hiroyuki Okamoto, Toshihiro Okamoto, Masanobu Haraguchi, Mohamed Swillam

Proceedings Volume 8994, 89940V (2014) https://doi.org/10.1117/12.2038858

KEYWORDS: Sensors, Refractive index, Plasmonics, Resonators, Finite-difference time-domain method, Waveguides, Nanolithography, Fabrication, Ion beams, Silver

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SPIE Journal Paper | 20 November 2013 Open Access

Resonance-based integrated plasmonic nanosensor for lab-on-chip applications

Salah El-Zohary, Abdulilah Azzazi, Toshihiro Okamoto, Masanobu Haraguchi, Mohamed Swillam, Hiroyuki Okamoto

JNP, Vol. 7, Issue 01, 073077, (November 2013) https://doi.org/10.1117/12.10.1117/1.JNP.7.073077

KEYWORDS: Resonators, Refractive index, Plasmonics, Sensors, Nanosensors, Finite-difference time-domain method, Plasmonic sensors, Waveguides, Computer simulations, Biosensing

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Proceedings Article | 9 October 2012 Paper

Development of plasmonic racetrack resonators with a trench structure

Hiroyuki Okamoto, Kenzo Yamaguchi, Masanobu Haraguchi, Toshihiro Okamoto

Proceedings Volume 8457, 845723 (2012) https://doi.org/10.1117/12.929373

KEYWORDS: Resonators, Plasmonics, Integrated optical circuits, Waveguides, Silver, Plasmons, Optical components, Polaritons, Scanning electron microscopy, Finite-difference time-domain method

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Proceedings Article | 11 September 2010 Paper

Optical resonator in gap plasmon waveguide

Masanobu Haraguchi, Hidenori Sokabe, Tatsuya Okuno, Toshihiro Okamoto, Masuo Fukui

Proceedings Volume 7757, 775720 (2010) https://doi.org/10.1117/12.861131

KEYWORDS: Resonators, Plasmons, Waveguides, Silver, Transmittance, Light scattering, Optical resonators, Reflectivity, Light wave propagation, Dielectrics

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Proceedings Article | 2 September 2009 Paper

Gap plasmon waveguide with a stub: structure for a wavelength selective device

Masanobu Haraguchi, Kazunori Iuchi, Hidenori Sokabe, Tatsuya Okuno, Toshihiro Okamoto, Masuo Fukui, Kazumasa Okamoto, Seiichi Tagawa

Proceedings Volume 7395, 73950U (2009) https://doi.org/10.1117/12.825789

KEYWORDS: Waveguides, Plasmons, Silver, Wave propagation, Metals, Transmittance, Numerical simulations, Plasmonics, Finite-difference time-domain method, Dielectrics

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Proceedings Article | 28 August 2008 Paper

Plasmonic waveguides with wavelength selective function

Masanobu Haraguchi, Yosuke Matsuzaki, Tatsuro Tsuzura, Toshihiro Okamoto, Masuo Fukui, Kazumasa Okamoto, Shu Seki, Seiichi Tagawa

Proceedings Volume 7033, 70330V (2008) https://doi.org/10.1117/12.794541

KEYWORDS: Waveguides, Plasmons, Transmittance, Mirrors, Resonators, Plasmonics, Plasmonic waveguides, Fabry–Perot interferometers, Metals, Dielectrics

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Proceedings Article | 11 September 2006 Paper

Characteristics of plasmonic waveguides and nonlinear metallic particles

Masuo Fukui, Toshihiro Okamoto, Toshiaki Ogawa, Masanobu Haraguchi, David F. P. Pile, Dmitri Gramotnev

Proceedings Volume 6324, 632401 (2006) https://doi.org/10.1117/12.679397

KEYWORDS: Plasmons, Particles, Finite-difference time-domain method, Light scattering, Distance measurement, Wave propagation, Silver, Plasmonic waveguides, Cadmium sulfide, Light wave propagation

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Proceedings Article | 11 September 2006 Paper

Characteristics of plasmonic waveguides for coupled wedge plasmons

Masanobu Haraguchi, David Pile, Kenzo Yamaguchi, Yosuke Matsuzaki, Naoki Sato, Dmitri Gramotnev, Masuo Fukui, Toshihiro Okamoto

Proceedings Volume 6324, 632405 (2006) https://doi.org/10.1117/12.680307

KEYWORDS: Waveguides, Glasses, Wave propagation, Silver, Plasmonic waveguides, Radio propagation, Light wave propagation, Plasmons, Dielectrics, Finite-difference time-domain method

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Proceedings Article | 18 August 2005 Paper

Numerical simulations of localized surface plasmons at a nano silver particle on a glass substrate

Masanobu Haraguchi, Masahiko Noguchi, Masamitsu Fujii, Toshihiro Okamoto, Masuo Fukui

Proceedings Volume 5928, 592811 (2005) https://doi.org/10.1117/12.616519

KEYWORDS: Particles, Optical spheres, Silver, Dielectrics, Glasses, Image enhancement, Finite-difference time-domain method, Metals, Mirrors, Nano silver particles

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Showing 5 of 27 publications

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