Prof. Kotaro Hiramatsu Profile

Prof. Kotaro Hiramatsu

Assistant Professor at Univ of Tokyo

SPIE Involvement:

Author

Publications (18)

Proceedings Article | 13 March 2024 Presentation

Fluorescence-encoded low-frequency vibrational spectroscopy in the visible region

Tetsu Tamura, Phillip Charles McCann, Kotaro Hiramatsu, Keisuke Goda

Proceedings Volume PC12839, PC128390S (2024) https://doi.org/10.1117/12.2692410

KEYWORDS: Visible radiation, Vibration, Spectroscopy, Fluorophores, Raman spectroscopy, Windows, Optical parametric amplifiers, Multiplexing, Light absorption, Infrared radiation

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Proceedings Article | 16 March 2023 Presentation

Dual-surface substrate for in situ wearable surface-enhanced Raman spectroscopy (Conference Presentation)

Yasutaka Kitahama, Pablo Martinez Pancorbo, Ting-Hui Xiao, Machiko Marumi, Kotaro Hiramatsu, Keisuke Goda, William Yang, Hiroki Segawa

Proceedings Volume PC12396, PC1239602 (2023) https://doi.org/10.1117/12.2655690

KEYWORDS: Surface enhanced Raman spectroscopy, Chemical fiber sensors, Biological and chemical sensing, Sensors, In situ remote sensing, Chemical analysis, Biosensing, Stretchable circuits, Sensor technology, Nanolithography

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Proceedings Article | 15 March 2023 Presentation

High-speed FT-CARS spectroscopy for high-throughput phenotyping (Conference Presentation)

Kotaro Hiramatsu

Proceedings Volume PC12392, PC123920Z (2023) https://doi.org/10.1117/12.2655565

KEYWORDS: Spectroscopy, Raman spectroscopy, Flow cytometry, Ultrafast phenomena, Ultrafast laser spectroscopy, Medicine, Fiber lasers, CARS tomography, Breast cancer, Biology

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Proceedings Article | 15 March 2023 Presentation

Broadband fluorescence-encoded vibrational imaging (Conference Presentation)

Phillip McCann, Kotaro Hiramatsu, Keisuke Goda

Proceedings Volume PC12392, PC1239219 (2023) https://doi.org/10.1117/12.2655732

KEYWORDS: Raman spectroscopy, Luminescence, Imaging systems, Super resolution, Sapphire lasers, Molecular imaging, Modulation, Computer programming

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SPIE Journal Paper | 7 March 2023 Open Access

High-speed hyperspectral imaging enabled by compressed sensing in time domain

Shigekazu Takizawa, Kotaro Hiramatsu, Matthew Lindley, Julia Gala de Pablo, Shunsuke Ono, Keisuke Goda

APN, Vol. 2, Issue 02, 026008, (March 2023) https://doi.org/10.1117/12.10.1117/1.APN.2.2.026008

KEYWORDS: Hyperspectral imaging, Image restoration, Raman spectroscopy, Compressed sensing, 3D acquisition, Image acquisition, Interferograms, 3D scanning, Scanners, 3D image processing

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Proceedings Article | 30 May 2022 Presentation

Ultrabroadband time-domain Raman spectroscopy using synchronized mode-locked lasers

Kotaro Hiramatsu, Keisuke Goda

Proceedings Volume PC12144, PC121440E (2022) https://doi.org/10.1117/12.2624563

KEYWORDS: Raman spectroscopy, Mode locking, Spectroscopy, Pulsed laser operation, Fiber lasers, Ultrafast phenomena, Spectroscopes, Scientific research, Scanners, Raman scattering

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Proceedings Article | 7 March 2022 Presentation

Porous carbon nanowires for plasmon-free SERS

Tinghui Xiao, Nan Chen, Zhengyi Luo, Yasutaka Kitahama, Kotaro Hiramatsu, Naoki Kishimoto, Tamitake Itoh, Zhenzhou Cheng, Keisuke Goda

Proceedings Volume PC11957, PC119570O (2022) https://doi.org/10.1117/12.2609257

KEYWORDS: Surface enhanced Raman spectroscopy, Nanowires, Carbon, Metals, Resonance enhancement, Nanostructures, Spectroscopy, Rhodamine, Raman spectroscopy, Raman scattering

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Proceedings Article | 7 March 2022 Presentation

Chiral-field-enhanced Raman optical activity by a silicon nanodisk array

Tinghui Xiao, Zhengyi Luo, Kotaro Hiramatsu, Akihiro Isozaki, Tamitake Itoh, Zhenzhou Cheng, Masahiro Nomura, Satoshi Iwamoto, Keisuke Goda

Proceedings Volume PC11957, PC119570P (2022) https://doi.org/10.1117/12.2609277

KEYWORDS: Raman spectroscopy, Silicon, Optical activity, X-rays, Spectroscopy, Molecules, Crystallography, Resonance enhancement, Molecular spectroscopy, Chemical analysis

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Proceedings Article | 5 March 2022 Presentation

High-speed Fourier-transform spectroscopy by non-mechanical cavity modulation

Kotaro Hiramatsu

Proceedings Volume PC12005, PC1200502 (2022) https://doi.org/10.1117/12.2610018

KEYWORDS: Spectroscopy, Modulation, Mode locking, Signal to noise ratio, Raman spectroscopy, Temporal coherence, Spectral resolution, Precision calibration, Optical spectroscopy, Molecular spectroscopy

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Proceedings Article | 2 March 2022 Presentation

THz-fingerprint coherent Raman spectroscopy at over 20,000 spectra/sec

Jorgen Walker Peterson, Matt Lindley, Julia Gala de Pablo, Kotaro Hiramatsu, Keisuke Goda

Proceedings Volume PC11971, PC119710J (2022) https://doi.org/10.1117/12.2607734

KEYWORDS: Raman spectroscopy, Terahertz radiation, Spectroscopy, Signal to noise ratio, Imaging spectroscopy, Molecular spectroscopy, Intelligence systems, Raman scattering, Radio optics, Optical spectroscopy imaging

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Proceedings Article | 2 March 2022 Presentation

Raman image-activated cell sorting and beyond

Keisuke Goda, Kotaro Hiramatsu

Proceedings Volume PC11973, PC119730K (2022) https://doi.org/10.1117/12.2608054

KEYWORDS: Raman spectroscopy, Raman scattering, Laser scattering, Image acquisition

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Proceedings Article | 2 March 2022 Presentation

Raman flow cytometry on a chip

Kotaro Hiramatsu

Proceedings Volume PC11971, PC119710L (2022) https://doi.org/10.1117/12.2615334

KEYWORDS: Raman spectroscopy, Flow cytometry, Spectroscopy, Proteins, Polymers, CARS tomography

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SPIE Journal Paper | 26 February 2022 Open Access

Ultrafast impulsive Raman spectroscopy across the terahertz–fingerprint region

Walker Peterson, Julia Gala de Pablo, Matthew Lindley, Kotaro Hiramatsu, Keisuke Goda

AP, Vol. 4, Issue 01, 016003, (February 2022) https://doi.org/10.1117/12.10.1117/1.AP.4.1.016003

KEYWORDS: Raman spectroscopy, Signal to noise ratio, Signal detection, Terahertz radiation, Ultrafast laser spectroscopy, Spectroscopy, Optical filters, Refractive index, Photonics, Intelligence systems

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Proceedings Article | 5 March 2021 Presentation + Paper

Fast, sensitive dual-comb CARS spectroscopy with a quasi-dual-comb laser

Risako Kameyama, Sigekazu Takizawa, Kotaro Hiramatsu, Keisuke Goda

Proceedings Volume 11654, 116540D (2021) https://doi.org/10.1117/12.2578042

KEYWORDS: Spectroscopy, Molecular lasers, Energy efficiency, Spectral resolution, Signal to noise ratio, Sapphire lasers, Raman spectroscopy, Pulsed laser operation, Picosecond phenomena

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Proceedings Article | 5 March 2021 Presentation

Fluorescence-encoded time-domain coherent Raman spectroscopy through single-photon counting

Phillip Charles McCann, Kotaro Hiramatsu, Keisuke Goda

Proceedings Volume 11650, 116500B (2021) https://doi.org/10.1117/12.2576638

KEYWORDS: Raman spectroscopy, Luminescence, Super resolution, Spectroscopy, Single-photon counters, Scanners, Sapphire lasers, Modulation, CARS tomography

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Proceedings Article | 10 March 2020 Presentation

High-throughput multimodal Raman-fluorescence flow cytometry (Conference Presentation)

Matthew Lindley, Kotaro Hiramatsu, Fukashi Shibata, Tsuyoshi Takeshita, Shigeyuki Kawano, Keisuke Goda

Proceedings Volume 11250, 112500S (2020) https://doi.org/10.1117/12.2545022

KEYWORDS: Flow cytometry, Luminescence, Raman spectroscopy, Sensors, Proteins, CARS tomography, Femtosecond phenomena, Sapphire lasers, Biological research

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Proceedings Article | 10 March 2020 Presentation

Highly sensitive low-frequency Raman spectroscopy enabled by Sagnac-enhanced impulsive stimulated Raman scattering (Conference Presentation)

Walker Peterson, Kotaro Hiramatsu, Keisuke Goda

Proceedings Volume 11251, 1125107 (2020) https://doi.org/10.1117/12.2544091

KEYWORDS: Raman spectroscopy, Raman scattering, Spectroscopy, Chemical analysis, Signal to noise ratio, Intelligence systems, Biological research, Chemistry, Biology, Medicine

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Proceedings Article | 9 March 2020 Presentation

High-throughput vibrational flow cytometry and beyond (Conference Presentation)

Keisuke Goda, Yasuyuki Ozeki, Kotaro Hiramatsu, Yuta Suzuki

Proceedings Volume 11236, 112360R (2020) https://doi.org/10.1117/12.2548548

KEYWORDS: Flow cytometry, Cell biology, Biology, Cancer, Microbiology, Stem cells, Pathology, Biological research, CARS tomography, Raman scattering

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Showing 5 of 18 publications

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