Dr. Haruyoshi Toyoda Profile

Dr. Haruyoshi Toyoda

Executive Officer, Director of Central Research Lab. at Hamamatsu Photonics KK

SPIE Involvement:

Conference Program Committee | Author

Publications (28)

Proceedings Article | 13 March 2024 Presentation

Multi-spot polarization state encoded digital feedback system with phase-only spatial light modulators for cyber-physical laser processing system

Yu Takiguchi, Naoaki Kato, Keisuke Uchida, Tomoko Otsu-Hyodo, Kazuhiro Nakamura, Munenori Takumi, Hiroshi Tanaka, Haruyoshi Toyoda

Proceedings Volume PC12903, PC129030Q (2024) https://doi.org/10.1117/12.3004854

KEYWORDS: Polarization, Laser processing, Spatial light modulators, Laser systems engineering, Digital Light Processing, Internet of things, Holography, Phase shift keying, Optical signal processing, Manufacturing

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Proceedings Article | 14 March 2023 Presentation + Paper

Characteristics of large active area, phase-only spatial light modulator with dielectric mirror

Hiroshi Tanaka, Yu Takiguchi, Tsubasa Watanabe, Naoaki Kato, Keisuke Uchida, Munenori Takumi, Tomoko Otsu-Hyodo, Kazuhiro Nakamura, Hiroaki Ishii, Atsushi Ihori, Yoshiki Akizawa, Hirokazu Asaine, Mikio Nagata, Yoshiyuki Ohtake, Haruyoshi Toyoda

Proceedings Volume 12442, 124420D (2023) https://doi.org/10.1117/12.2649460

KEYWORDS: Laser processing, Spatial light modulators, Liquid crystals, Phase modulation, Dielectric mirrors, Manufacturing, Laser irradiation, Laser systems engineering, Quantum technologies, High power lasers

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Proceedings Article | 27 October 2021 Paper

Hologram optimized in holographic laser processing system

Honghao Zhang, Satoshi Hasegawa, Haruyoshi Toyoda, Yoshio Hayasaki

Proceedings Volume 11927, 1192709 (2021) https://doi.org/10.1117/12.2616251

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Proceedings Article | 9 October 2021 Presentation + Paper

Three-dimensional holographic laser reconstruction and processing with optimized computer-generated hologram

Honghao Zhang, Satoshi Hasegawa, Haruyoshi Toyoda, Yoshio Hayasaki

Proceedings Volume 11898, 118980I (2021) https://doi.org/10.1117/12.2600491

KEYWORDS: Computer generated holography, Holography, Laser processing, Diffraction, 3D displays, 3D modeling, Glasses, Computing systems, Optimization (mathematics), 3D image processing

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Proceedings Article | 5 March 2021 Presentation + Paper

High laser power resistance phase-only spatial light modulator for laser processing cyber-physical system

Yu Takiguchi, Hiroshi Tanaka, Tsubasa Watanabe, Hirokazu Asaine, Naohisa Mukozaka, Yoshiyuki Ohtake, Haruyoshi Toyoda

Proceedings Volume 11673, 1167305 (2021) https://doi.org/10.1117/12.2577330

KEYWORDS: Laser processing, Liquid crystals, Wavefronts, Spatial light modulators, Phase shift keying, Laser systems engineering, Phase modulation, Modulation, Polarization

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SPIE Journal Paper | 20 July 2017

Suppression of backside damage in nanosecond internal-focusing pulse laser dicing with wavefront modulation

Yu Takiguchi, Masaki Oyaizu, Makoto Nakano, Takashi Inoue, Haruyoshi Toyoda

OE, Vol. 56, Issue 07, 077109, (July 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.7.077109

KEYWORDS: Pulsed laser operation, Semiconducting wafers, Wavefronts, Modulation, Semiconductor lasers, Laser induced damage, Integrated circuits, Aberration correction, Sapphire, Objectives

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Proceedings Article | 18 April 2017 Paper

Two-photon excitation microscopy with spatial light modulator

Naoya Matsumoto, Alu Konno, Takashi Inoue, Haruyoshi Toyoda, Toshiyuki Miwa, Kazuhiro Nakamura, Shigetoshi Okazaki

Proceedings Volume 10251, 1025105 (2017) https://doi.org/10.1117/12.2269406

KEYWORDS: Wavefronts, Spatial light modulators, Luminescence, Objectives, Epoxies, Modulation, Statistical modeling, Monochromatic aberrations, Brain, Two photon excitation microscopy

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Proceedings Article | 18 April 2017 Paper

Holographic 3D multi-spot two-photon excitation for fast optical stimulation in brain

Yu Takiguchi, Haruyoshi Toyoda

Proceedings Volume 10251, 1025117 (2017) https://doi.org/10.1117/12.2271607

KEYWORDS: Holography, Brain, Holograms, Spatial light modulators, Neurons, Optical spheres, Calcium, Microscopes, Fourier transforms, Sensors

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Proceedings Article | 16 February 2017 Paper

Advanced wavefront correction of spatial light modulator under temperature-varying conditions

Yu Takiguchi, Tomoko Otsu-Hyodo, Takashi Inoue, Haruyoshi Toyoda

Proceedings Volume 10126, 101260J (2017) https://doi.org/10.1117/12.2248996

KEYWORDS: Wavefronts, Modulation, Temperature metrology, Liquid crystals, Distortion, Interferometry, Phase shift keying, Fourier transforms, Mirrors, Spatial light modulators

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Proceedings Article | 12 October 2015 Paper

Adaptive position detection of optical vortex using a Shack-Hartmann wavefront sensor

Jia Luo, Hongxin Huang, Yoshinori Matsui, Haruyoshi Toyoda, Takashi Inoue, Jian Bai

Proceedings Volume 9633, 96332A (2015) https://doi.org/10.1117/12.2195693

KEYWORDS: Spiral phase plates, Wavefront sensors, Optical vortices, Beam splitters, Collimation, Spatial light modulators, Spatial resolution, Photonics, Information operations, Phase shift keying

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Proceedings Article | 5 August 2015 Paper

Application of liquid crystal on silicon spatial light modulator

Haruyoshi Toyoda

Proceedings Volume 9618, 961805 (2015) https://doi.org/10.1117/12.2191665

KEYWORDS: Spatial light modulators, Adaptive optics, Phase modulation, Phase shift keying, Liquid crystal on silicon, Liquid crystals, Spiral phase plates, Laser processing, Scientific research, Microscopes

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SPIE Journal Paper | 25 June 2015 Open Access

Eight-connected contour method for accurate position detection of optical vortices using Shack–Hartmann wavefront sensor

Hongxin Huang, Jia Luo, Yoshinori Matsui, Haruyoshi Toyoda, Takashi Inoue

OE, Vol. 54, Issue 11, 111302, (June 2015) https://doi.org/10.1117/12.10.1117/1.OE.54.11.111302

KEYWORDS: Spiral phase plates, Phase measurement, Optical vortices, Wavefront sensors, Spatial resolution, Optical engineering, Beam splitters, Numerical analysis, Spatial light modulators, Image sensors

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Proceedings Article | 10 March 2015 Paper

Optical vortex position detection with a Shack-Hartmann wavefront sensor using extended closed contour method

Hongxin Huang, Jia Luo, Yoshinori Matsui, Haruyoshi Toyoda, Takashi Inoue

Proceedings Volume 9379, 93790J (2015) https://doi.org/10.1117/12.2078471

KEYWORDS: Spiral phase plates, Wavefront sensors, Optical vortices, Liquid crystal on silicon, Phase measurement, Beam splitters, Error analysis, Image sensors, Wavefronts, Spatial resolution

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Proceedings Article | 6 August 2014 Paper

Estimation of trapping position in three-dimensional off-axis trapping with optical vortices

Taro Ando, Tomoko Otsu, Yu Takiguchi, Yoshiyuki Ohtake, Haruyoshi Toyoda, Hiroyasu Itoh

Proceedings Volume 9232, 92320W (2014) https://doi.org/10.1117/12.2065644

KEYWORDS: Optical spheres, Glasses, Dielectrics, Optical vortices, Image sensors, Optical tweezers, Error analysis, Holography, Spatial light modulators, Photonics

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Proceedings Article | 24 April 2002 Paper

Column parallel vision system: CPV

Naohisa Mukozaka, Haruyoshi Toyoda, Seiichiro Mizuno, Ming Wu, Yoshihiro Nakabo, Masatoshi Ishikawa

Proceedings Volume 4669, (2002) https://doi.org/10.1117/12.463438

KEYWORDS: Image processing, Parallel processing, Sensors, Personal digital assistants, Field programmable gate arrays, Control systems, Transistors, Imaging systems, Photonics, Detection and tracking algorithms

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Proceedings Article | 8 November 2001 Paper

Reconfigurable free-space optical interconnection module for pipelined optoelectronic parallel processing

Masatoshi Ishikawa, Makoto Naruse, Alain Goulet, Haruyoshi Toyoda, Yuji Kobayashi

Proceedings Volume 4457, (2001) https://doi.org/10.1117/12.447741

KEYWORDS: Optical interconnects, Optoelectronics, Free space optics, Diffraction, Computer generated holography, Parallel processing, LCDs, Fourier transforms, Vertical cavity surface emitting lasers, Modulation

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Proceedings Article | 8 May 2001 Paper

Column parallel vision system (CPV) for high-speed 2D image analysis

Haruyoshi Toyoda, Naohisa Mukohzaka, Seiichiro Mizuno, Yoshihiro Nakabo, Masatoshi Ishikawa

Proceedings Volume 4416, (2001) https://doi.org/10.1117/12.427061

KEYWORDS: Image processing, Parallel processing, Intelligence systems, Sensing systems, Photonics, Control systems, Image analysis, Feedback loops, Human-machine interfaces, Imaging systems

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Proceedings Article | 24 May 2000 Paper

Optically interconnected pipelined parallel processing system: OCULAR-II

Makoto Naruse, Haruyoshi Toyoda, Yuji Kobayashi, Daisuke Kawamata, Neil McArdle, Alain Goulet, Masatoshi Ishikawa

Proceedings Volume 4089, (2000) https://doi.org/10.1117/12.386861

KEYWORDS: Optical interconnects, Spatial light modulators, Computing systems, Optoelectronics, Vertical cavity surface emitting lasers, Fourier transforms, Parallel processing, Optical components, Free space optics, LCDs

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Proceedings Article | 10 March 2000 Paper

Compact high-efficiency electrically addressable phase-only spatial light modulator

Yuji Kobayashi, Yasunori Igasaki, Narihiro Yoshida, Norihiro Fukuchi, Haruyoshi Toyoda, Tsutomu Hara, Ming Wu

Proceedings Volume 3951, (2000) https://doi.org/10.1117/12.379364

KEYWORDS: Diffraction, LCDs, Spatial light modulators, Liquid crystals, Phase modulation, Modulation, Phase shift keying, Spatial frequencies, Modulators, Mirrors

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Proceedings Article | 19 July 1999 Paper

Experiments with new phase image encrypting method

Paul Mogensen, Jesper Glueckstad, Haruyoshi Toyoda, Tsutomu Hara

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354745

KEYWORDS: Image encryption, Inverse optics, Computer security, Optical image encryption, Phase contrast, Visualization, Liquid crystals, Interferometers, Phase only filters, Image compression

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SPIE Journal Paper | 1 July 1999

Development of an optical joint transform correlation system for fingerprint recognition

Yuji Kobayashi, Haruyoshi Toyoda

OE, Vol. 38, Issue 07, (July 1999) https://doi.org/10.1117/12.10.1117/1.602269

KEYWORDS: Optical correlators, Spatial light modulators, Fingerprint recognition, Joint transforms, Modulation, Databases, Charge-coupled devices, Analog electronics, Liquid crystals, Thermography

Proceedings Article | 1 April 1998 Paper

Nonpixellated electrically addressed spatial light modulator (SLM) Developed by combining an optically addressed SLM with a CRT

Narihiro Yoshida, Haruyoshi Toyoda, Yasuhiro Igasaki, Naohisa Mukohzaka, Yuji Kobayashi, Tsutomu Hara

Proceedings Volume 3402, (1998) https://doi.org/10.1117/12.304938

KEYWORDS: Spatial light modulators, CRTs, Computer generated holography, Diffraction, Modulation, Optically addressed spatial light modulators, Liquid crystals, LCDs, Spatial resolution, Image quality

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Proceedings Article | 27 December 1996 Paper

Application of parallel-aligned nematic liquid crystal spatial-light modulator (PAL-SLM) to optical joint transform correlator

Tsutomu Hara, Yuji Kobayashi, Haruyoshi Toyoda, Naohisa Mukohzaka, Narihiro Yoshida, Yasuhiro Igasaki

Proceedings Volume 2969, (1996) https://doi.org/10.1117/12.262626

KEYWORDS: Liquid crystals, Optical correlators, Diffraction, Joint transforms, Fingerprint recognition, Spatial frequencies, Parallel processing, Optical computing, CCD cameras, Signal detection

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Proceedings Article | 27 December 1996 Paper

Experimental verification of phase contrast image synthesis system

Jesper Glueckstad, Haruyoshi Toyoda, Narihiro Yoshida, Tamiki Takemori, Tsutomu Hara

Proceedings Volume 2969, (1996) https://doi.org/10.1117/12.262567

KEYWORDS: Phase contrast, Phase shift keying, Image filtering, Optical filters, Phase modulation, Modulation, Photonics, Computer programming, Spatial light modulators, Optical components

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Proceedings Article | 23 September 1996 Paper

Nonpixellated electrically addressed spatial light modulator (SLM) combining an optically addressed SLM with a CRT

Narihiro Yoshida, Haruyoshi Toyoda, Yasuhiro Igasaki, Naohisa Mukohzaka, Yuji Kobayashi, Tsutomu Hara

Proceedings Volume 2885, (1996) https://doi.org/10.1117/12.251874

KEYWORDS: CRTs, Spatial light modulators, Computer generated holography, Relays, Diffraction, 3D image reconstruction, Modulation, Luminescence, Liquid crystals, Spatial resolution

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Proceedings Article | 23 September 1996 Paper

Energy-efficient image projection by use of novel phase contrast technique

Jesper Glueckstad, Haruyoshi Toyoda, Yasuhiro Igasaki, Narihiro Yoshida, Toshihiko Ooie, Tsutomu Hara

Proceedings Volume 2885, (1996) https://doi.org/10.1117/12.251873

KEYWORDS: Phase contrast, Phase shift keying, Image filtering, Optical filters, Modulation, Phase modulation, Binary data, Photonics, Computer programming, Light sources

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Proceedings Article | 1 April 1993 Paper

Optically addressed liquid-crystal phase-only modulating spatial light modulator

Narihiro Yoshida, Naohisa Mukohzaka, Haruyoshi Toyoda, Yuji Kobayashi, Tsutomu Hara

Proceedings Volume 1982, (1993) https://doi.org/10.1117/12.142058

KEYWORDS: Diffraction, Liquid crystals, Modulation, Phase shift keying, Phase shifts, Crystal optics, Spatial light modulators, Refractive index, Phase modulation, Molecules

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Proceedings Article | 10 December 1992 Paper

Superresolution optical microscope by the phase-shifting laser spots

Isao Shimizu, Y. Takahara, Y. Koshikiya, S. Aotani, Haruyoshi Toyoda

Proceedings Volume 1752, (1992) https://doi.org/10.1117/12.130733

KEYWORDS: Phase shifts, Optical microscopes, Particles, Semiconducting wafers, Super resolution, Optical filters, Photomasks, Light scattering, Optical resolution, Near field scanning optical microscopy

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Showing 5 of 28 publications

Conference Committee Involvement (5)

AI and Optical Data Sciences VI

25 January 2025 | San Francisco, United States

AI and Optical Data Sciences V

29 January 2024 | San Francisco, California, United States

AI and Optical Data Sciences IV

30 January 2023 | San Francisco, California, United States

AI and Optical Data Sciences III

24 January 2022 | San Francisco, California, United States

AI and Optical Data Sciences II

6 March 2021 | Online Only, California, United States

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