Prof. Yasuo Tomita Profile

Prof. Yasuo Tomita

Professor

SPIE Involvement:

Conference Chair | Editor | Author

Area of Expertise:

Nonlinear optics , Holography , Statistical optics , Nanocomposite and soft matter photonic materials , Neutron optics , Magneto-optics

Publications (36)

Proceedings Article | 24 May 2022 Paper

Nanodiamond-based nanoparticle-polymer composite gratings with extremely large neutron refractive index modulation

Elhoucine Hadden, Yuko Iso, Atsushi Kume, Koichi Umemoto, Tobias Jenke, Martin Fally, Jürgen Klepp, Yasuo Tomita

Proceedings Volume 12151, 1215109 (2022) https://doi.org/10.1117/12.2623661

KEYWORDS: Diffraction, Diffraction gratings, Modulation, Scattering, Composites, Holography, Refractive index, Light scattering

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Proceedings Article | 1 April 2020 Paper

Nanodiamond-polymer composite gratings as diffractive optical elements for light and neutrons II: neutron optical diffraction properties

Martin Fally, Jürgen Klepp, Christian Pruner, Tobias Jenke, Peter Geltenbort, Akihisa Kageyama, Yuko Iso, Koichi Umemoto, Ming Liu, Yasuo Tomita

Proceedings Volume 11367, 113670N (2020) https://doi.org/10.1117/12.2555474

KEYWORDS: Optics, Holographic materials, Photopolymers, Nanoparticles, Diffraction, Diffraction gratings, Composites, Beam splitters, Diffractive optical elements, Polymers

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Proceedings Article | 1 April 2020 Presentation + Paper

Nanodiamond-polymer composite gratings as diffractive optical elements for light and neutrons I: their fabrication and light optical diffraction properties

Yasuo Tomita, Akihisa Kageyama, Yuki Iso, Koichi Umemoto, Ming Liu, Jürgen Klepp, Christian Pruner, Tobias Jenke, Peter Geltenbort, Martin Fally

Proceedings Volume 11367, 113670M (2020) https://doi.org/10.1117/12.2555651

KEYWORDS: Neodymium, Diffraction gratings, Nanoparticles, Holography, Diffraction, Polymers, Composites, Refractive index, Absorption, Scattering

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Proceedings Article | 23 April 2019 Presentation + Paper

Hyperbranched-polymer nanocomposite gratings with ultrahigh refractive index modulation amplitudes for volume holographic optical elements

Yasuo Tomita, Toshi Aoi, Juro Oshima, Keisuke Odoi

Proceedings Volume 11030, 1103007 (2019) https://doi.org/10.1117/12.2520512

KEYWORDS: Nanoparticles, Refractive index, Holography, Polymers, Modulation, Volume holography, Photopolymers, Molecules, Glasses, Nanocomposites

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Proceedings Article | 23 April 2019 Presentation + Paper

Retrieving the refractive index profile of a holographic grating by diffraction experiments

Martin Fally, Jürgen Klepp, Mostafa Ellabban, Helmut Eckerlebe, Philipp Pranzas, Jinxin Guo, Yasuo Tomita

Proceedings Volume 11030, 110300I (2019) https://doi.org/10.1117/12.2527317

KEYWORDS: Diffraction, Diffraction gratings, Holography, Refractive index, Physics, Fourier transforms, Composites, Crystallography, Nanocomposites, Photonics

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Proceedings Article | 24 May 2018 Paper

Spatial frequency response of nanocomposite holographic gratings

Yasuo Tomita, Toshihiro Nakamura, Agyl Rizky, Ryota Fujii, Jinxin Guo

Proceedings Volume 10679, 106790U (2018) https://doi.org/10.1117/12.2312427

KEYWORDS: Nanoparticles, Holography, Spatial frequencies, Polymers, Refractive index, Diffusion, Nanocomposites, Transmission electron microscopy, Molecules, Modulation

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Proceedings Article | 15 May 2017 Presentation + Paper

Thermal effects of the functionalities of chain transfer agent on photopolymer holographic volume gratings

Jinxin Guo, Yasuo Tomita, Xinping Zhang

Proceedings Volume 10233, 102330D (2017) https://doi.org/10.1117/12.2265668

KEYWORDS: Polymers, Polymerization, Holography, Holography applications, Volume holography, Zirconium dioxide, Thermal effects, Nanoparticles, Data storage

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Proceedings Article | 15 May 2017 Presentation + Paper

Nanocomposite volume holographic gratings incorporated with ultrahigh refractive index hyperbranched polymer for diffractive optical elements

Yasuo Tomita, Satoko Oyaizu, Naoya Nishimura, Keisuke Odoi

Proceedings Volume 10233, 102330A (2017) https://doi.org/10.1117/12.2264604

KEYWORDS: Holography, Polymers, Nanocomposites, Volume holography, Refractive index, Photopolymers, Holographic materials, Photorefractive polymers, Diffractive optical elements, Holographic optical elements, Nanoparticles, Molecules, Diffraction gratings

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Proceedings Article | 31 October 2016 Paper

Hyperbranched-polymer dispersed nanocomposite volume gratings for holography and diffractive optics

Yasuo Tomita, Shinsuke Takeuchi, Satoko Oyaizu, Hiroshi Urano, Taka-aki Fukamizu, Naoya Nishimura, Keisuke Odoi

Proceedings Volume 10022, 100220P (2016) https://doi.org/10.1117/12.2246103

KEYWORDS: Holography, Refractive index, Volume holography, Polymers, Nanoparticles, Photorefractive polymers, Holography applications, Diffraction gratings, Modulation, Photopolymers

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Proceedings Article | 27 April 2016 Paper

Blue-sensitized nanoparticle-(thiol-ene) polymer composites for volume holographic recording

Jun-ichiro Takahashi, Masaru Kawana, Yasuo Tomita

Proceedings Volume 9889, 988913 (2016) https://doi.org/10.1117/12.2225061

KEYWORDS: Holography, Nanoparticles, Volume holography, Photopolymerization, Composites, Holographic materials, Holograms, Nanocomposites, Polymerization, Polymers, Silica, Absorption, Photopolymers

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Proceedings Article | 5 September 2015 Presentation + Paper

Photopolymerizable polymer nanocomposites incorporated with hyperbranched polymer having ultrahigh index of refraction for holographic light manipulation

Yasuo Tomita, Hiroshi Urano, Taka-aki Fukamizu, Yasuhiro Kametani, Naoya Nishimura, Keisuke Odi

Proceedings Volume 9564, 95640S (2015) https://doi.org/10.1117/12.2187747

KEYWORDS: Polymers, Nanoparticles, Holography, Refractive index, Photorefractive polymers, Polymerization, Nanocomposites, Volume holography, Photopolymers, Molecules

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Proceedings Article | 1 May 2014 Paper

Spatial frequency response of a volume hologram recorded in a ZrO2 nanoparticle-dispersed acrylate photopolymer film containing chain transfer agents

Jinxin Guo, Ryuta Fujii, Yasuo Tomita

Proceedings Volume 9131, 913118 (2014) https://doi.org/10.1117/12.2052291

KEYWORDS: Spatial frequencies, Polymers, Holography, Refractive index, Holograms, Nanoparticles, Zirconium dioxide, Modulation, Diffusion, Photopolymers

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Proceedings Article | 1 May 2014 Paper

Characterization of photopolymerizable nanoparticle-(thiol-ene) polymer composites for volume holographic recording at 404 nm

Masaru Kawana, Jun-ichiro Takahashi, Satoru Yasui, Yasuo Tomita

Proceedings Volume 9131, 913119 (2014) https://doi.org/10.1117/12.2051584

KEYWORDS: Silica, Holography, Nanoparticles, Volume holography, Photopolymerization, Doping, Refractive index, Modulation, Polymerization, Polymers

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Proceedings Article | 3 May 2013 Paper

Volume holographic recording in photopolymerizable nanocomposite materials based on radical-mediated thiol-yne step-growth polymerizations

Ken Mitsube, Yuki Nishimura, Shingo Takayama, Kohta Nagaya, Yasuo Tomita

Proceedings Volume 8776, 87760I (2013) https://doi.org/10.1117/12.2017477

KEYWORDS: Nanoparticles, Silica, Polymers, Holography, Photopolymerization, Volume holography, Holograms, Digital holography, Refractive index, Data storage

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Proceedings Article | 18 December 2012 Paper

Gaussian beam Z-scan analysis for nonlinear optical materials possessing simultaneous third- and fifth-order nonlinear refraction with saturable absorption: an application to semiconductor CdSe quantum dot-polymer nanocomposites

Yasuo Tomita, Xiangming Liu, Yusuke Adachi

Proceedings Volume 8550, 85503G (2012) https://doi.org/10.1117/12.979824

KEYWORDS: Refraction, Nonlinear optics, Gaussian beams, Nonlinear optical materials, Semiconductors, Absorption, Nanocomposites, Transmittance, Saturable absorption, Photonic crystals

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Proceedings Article | 9 May 2012 Paper

Computer simulation of Bragg grating formation in holographic polymer-dispersed liquid crystals based on the density functional theory

Yoshiaki Fukuda, Yasuo Tomita

Proceedings Volume 8429, 842919 (2012) https://doi.org/10.1117/12.922309

KEYWORDS: Liquid crystals, Polymers, Holography, Polymerization, Numerical simulations, Computer simulations, Refractive index, Photopolymerization, Statistical modeling, Diffusion

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Proceedings Article | 5 May 2012 Paper

Characterization of holographic digital data page recording in nanoparticle-polymer composite films based on thiol-ene photopolymerization

Yasuo Tomita, Keisuke Momose, Eiji Hata, Shingo Takayama

Proceedings Volume 8429, 842918 (2012) https://doi.org/10.1117/12.921788

KEYWORDS: Holography, Digital holography, Holograms, Data storage, Modulation, Polymerization, Holographic data storage systems, Nanoparticles, Composites, Polymers

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Proceedings Article | 8 February 2012 Paper

Slow-light in photonic crystal waveguides/fibers: dispersion tailoring schemes for obtaining a high group index with wide band and low GVD

Liyong Ren, Jian Liang, Yu Liu, Haijuan Ju, Maojin Yun, Chengju Ma, Xu Han, Xiao Lin, Yasuo Tomita

Proceedings Volume 8273, 82730L (2012) https://doi.org/10.1117/12.914460

KEYWORDS: Dispersion, Slow light, Photonic crystals, Photonic crystal fibers, Waveguides, Light wave propagation, Finite-difference time-domain method, Scattering, Optical fibers, Light scattering

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Proceedings Article | 11 May 2011 Paper

Photopolymerizable thiol-ene nanocomposite materials for holographic applications

Yasuo Tomita, Eiji Hata, Satoru Yasui, Ken Mitsube

Proceedings Volume 8074, 80740F (2011) https://doi.org/10.1117/12.886713

KEYWORDS: Nanoparticles, Holography, Polymerization, Silica, Nanocomposites, Polymers, Holograms, Volume holography, Data storage, Spectroscopy

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Proceedings Article | 18 May 2010 Paper

Z-scan characterization of nonlinear optical effects in polymer films incorporating hyperbranched polymer-metallic nanoparticle complex

Xiangming Liu, Yasuo Tomita, Kei Yasui, Keisuke Kojima, Katsumi Chikama

Proceedings Volume 7722, 77222A (2010) https://doi.org/10.1117/12.854808

KEYWORDS: Nanoparticles, Gold, Platinum, Polymers, Nanocomposites, Polymer thin films, Absorption, Refractive index, Solids, Dielectrics

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Proceedings Article | 18 May 2010 Paper

Low polymerization-shrinkage nanoparticle-polymer composite films based on thiol-ene photopolymerization for holographic data storage

Yasuo Tomita, Eiji Hata, Koji Omura, Satoru Yasui

Proceedings Volume 7722, 772229 (2010) https://doi.org/10.1117/12.854793

KEYWORDS: Nanoparticles, Polymerization, Holography, Composites, Polymers, Refractive index, Data storage, Volume holography, Photopolymerization, Holograms

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Proceedings Article | 12 February 2010 Paper

Electrical tuning of two-dimensional honeycomb photonic lattices using holographic polymer dispersed liquid crystals

Ryuichiroh Ohira, Mayu Miki, Yasuo Tomita

Proceedings Volume 7618, 761813 (2010) https://doi.org/10.1117/12.843097

KEYWORDS: Refractive index, Holography, Transmittance, Liquid crystals, Polymers, Dispersion, Refraction, Photonic crystals, Electrodes, Molecules

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Proceedings Article | 12 February 2010 Paper

Spatial and temporal evolution of transient stimulated-Brillouin-scattering slow-light pulse in an optical fiber

Liyong Ren, Yanlong Yang, Wei Zhao, Yasuo Tomita

Proceedings Volume 7612, 761207 (2010) https://doi.org/10.1117/12.840631

KEYWORDS: Acoustics, Optical fibers, Photonics, Transient nonlinear optics, Distortion, Photonic crystal fibers, Slow light, Phonons, Scattering, Nonlinear optics

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Proceedings Article | 21 August 2009 Paper

Blue-sensitive nanoparticle-polymer composites for volume holographic recording

Koji Omura, Kohshi Gotoh, Yasuo Tomita, Kentaroh Ohmori, Motohiko Hidaka

Proceedings Volume 7402, 74020X (2009) https://doi.org/10.1117/12.828129

KEYWORDS: Nanoparticles, Zirconium dioxide, Polymerization, Holography, Composites, Volume holography, Holograms, Photopolymerization, Refractive index, Photopolymers

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Proceedings Article | 3 February 2009 Paper

SBS-based slow light in optical fibers: optimum design considerations for undistorted slow-light signal propagation in steady-state and transient regimes

Liyong Ren, Yasuo Tomita

Proceedings Volume 7226, 722605 (2009) https://doi.org/10.1117/12.816339

KEYWORDS: Acoustics, Slow light, Optical fibers, Distortion, Transient nonlinear optics, Phonons, Scattering, Signal processing, Nonlinear optics, Single mode fibers

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Proceedings Article | 25 April 2008 Paper

On the thermal stability of volume holograms recorded in nanoparticle-polymer composite films

Yasuo Tomita, Toshihiro Nakamura, Atsushi Tago

Proceedings Volume 6994, 69940R (2008) https://doi.org/10.1117/12.783601

KEYWORDS: Nanoparticles, Holograms, Composites, Polymethylmethacrylate, Volume holography, Polymers, Holography, Refractive index, Zirconium dioxide, Silica

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Proceedings Article | 25 April 2008 Paper

Distortion management of SBS slow light in a single-mode optical fiber by optimization of broadband SBS gain spectrum

Liyong Ren, Yasuo Tomita

Proceedings Volume 6994, 69940G (2008) https://doi.org/10.1117/12.783604

KEYWORDS: Slow light, Single mode fibers, Distortion, Signal processing, Picosecond phenomena, Phase shifts, Signal attenuation, Light scattering, Scattering, Acoustics

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Proceedings Article | 18 September 2007 Paper

Holographic assembly of nanoparticles in polymers for 3D recording and patterning

Yasuo Tomita, Naoaki Suzuki, Yutaka Endoh, Shin-ichi Kurozumi, Mayu Miki, Katsumi Chikama

Proceedings Volume 6657, 665702 (2007) https://doi.org/10.1117/12.740108

KEYWORDS: Nanoparticles, Holography, Nanolithography, Polymers, Composites, Holograms, Silica, Diffusion, Molecules, Statistical modeling

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Proceedings Article | 8 September 2006 Paper

Nanocomposite photopolymers doped with nanoparticles for volume holographic recording

Yasuo Tomita, Yutaka Endoh, Naoaki Suzuki, Kouji Furushima

Proceedings Volume 6343, 634331 (2006) https://doi.org/10.1117/12.707752

KEYWORDS: Nanoparticles, Photopolymers, Holography, Nanocomposites, Silica, Diffusion, Volume holography, Polymerization, Molecules, Polymers

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Proceedings Article | 25 April 2006 Paper

Volume holographic recording in multicomponent photopolymers with hyperbranched polymers as organic nanoparticles

Yasuo Tomita, Kouji Furushima, Yutaka Endoh, Motohiko Hidaka, Kentaro Ohmori, Katsumi Chikama

Proceedings Volume 6187, 618702 (2006) https://doi.org/10.1117/12.663206

KEYWORDS: Photopolymers, Nanoparticles, Polymerization, Holography, Polymers, Holograms, Silica, Molecules, Refractive index, Volume holography

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Proceedings Article | 1 September 2005 Paper

Volume holographic recording based on mass transport of nanoparticles doped in methacrylate photopolymers

Yasuo Tomita, Naoaki Suzuki, Kouji Furushima, Yutaka Endoh

Proceedings Volume 5939, 593909 (2005) https://doi.org/10.1117/12.616343

KEYWORDS: Nanoparticles, Holography, Photopolymers, Silica, Diffusion, Polymers, Polymerization, Nanocomposites, Refractive index, Volume holography

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Proceedings Article | 19 November 2003 Paper

Nondestructive two-color holography in LiNbO3:Mg by use of ultraviolet-induced absorption

Guoquan Zhang, Yasuo Tomita

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.526930

KEYWORDS: Absorption, Holography, Nondestructive evaluation, Ultraviolet radiation, Magnesium, Crystals, UV optics, Near ultraviolet, Doping, Laser crystals

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Proceedings Article | 15 December 2000 Paper

Dual-grating formation in methacrylate photopolymer films

Takashi Kojima, Yasuo Tomita, Takeshi Wada, Seiichiro Hayakawa, Ryuichiro Takasaki

Proceedings Volume 4087, (2000) https://doi.org/10.1117/12.406466

KEYWORDS: Diffraction gratings, Surface finishing, Polishing, Holograms, Holography, Diffraction, Volume holography, Polymers, Photopolymerization, Modulation

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Proceedings Article | 22 September 1997 Paper

Role of ionic grating in self-enhanced readout from a thermally fixed grating in a photorefractive barium titanate crystal

Yasuo Tomita, Shun-suke Matsushima, Osamu Miyazaki

Proceedings Volume 3137, (1997) https://doi.org/10.1117/12.279185

KEYWORDS: Diffraction gratings, Diffraction, Ferroelectric materials, Crystals, Ions, Temperature metrology, Holograms, Holography, Absorption, Dielectrics

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Proceedings Article | 1 September 1996 Paper

Gain and pump-to-probe intensity ratio dependencies of response times in photorefractive two-beam coupling

Yasuo Tomita

Proceedings Volume 2778, 2778AD (1996) https://doi.org/10.1117/12.2316062

KEYWORDS: Crystals, Numerical simulations, Laser beam diagnostics, Electro optical modeling, Laser crystals, Solids, Electronics engineering, Electronic filtering, Electro optics

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Proceedings Article | 18 August 1995 Paper

Real-time wavelet-matched filtering using photorefractive four-wave mixing

Joewono Widjaja, Yasuo Tomita

Proceedings Volume 2529, (1995) https://doi.org/10.1117/12.217020

KEYWORDS: Nonlinear filtering, Electronic filtering, Four wave mixing, Crystals, Optical filters, Pattern recognition, Optical pattern recognition, Wavelets, Nonlinear optics, Laser crystals

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