Prof. Nobuhiro Kawatsuki Profile

Prof. Nobuhiro Kawatsuki

at Univ of Hyogo

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Author

Publications (17)

Proceedings Article | 30 September 2024 Presentation + Paper

Development of liquid crystal geometric phase elements for mid- and far-infrared wavelengths

Moritsugu Sakamoto, Yohei Mitsuboshi, Sora Ohara, Kuon Kawamura, Masato Suzuki, Kohei Noda, Tomoyuki Sasaki, Nobuhiro Kawatsuki, Hiroshi Ono

Proceedings Volume 13121, 1312109 (2024) https://doi.org/10.1117/12.3026040

KEYWORDS: Mid infrared, Diffraction gratings, Liquid crystals, Far infrared, Polarization

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Proceedings Article | 30 September 2024 Presentation + Paper

Hyperspectral S3 imager using liquid crystal polarized grating and its demonstration of material classification with deep learning

Masato Suzuki, Kimitaka Doi, Moritsugu Sakamoto, Kohei Noda, Tomoyuki Sasaki, Nobuhiro Kawatsuki, Hiroshi Ono

Proceedings Volume 13121, 1312108 (2024) https://doi.org/10.1117/12.3027403

KEYWORDS: Hyperspectral imaging, Imaging systems, Plastics, Liquid crystals, Polarization, Diffraction, Image classification, Deep learning, Near infrared, Scattered light

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Proceedings Article | 2 September 2021 Presentation + Paper

Polarized beam steering by use of multiply-cascaded rotating polarization gratings with biaxial anisotropy

Moritsugu Sakamoto, Huynh Thanh Nhan, Ryusei Momosaki, Kohei Noda, Tomoyuki Sasaki, Tadayoshi Kamei, Takeya Sakai, Yukitoshi Hattori, Nobuhiro Kawatsuki, Hiroshi Ono

Proceedings Volume 11807, 1180704 (2021) https://doi.org/10.1117/12.2593679

KEYWORDS: Beam steering, Polarization, Anisotropy, LIDAR, Diffraction gratings, Computer simulations, Liquid crystals

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Proceedings Article | 20 August 2020 Presentation + Paper

Vector beam demultiplexing via a crossed-fork shaped polarization grating fabricated by using photocrosslinkable liquid crystal polymer film

Moritsugu Sakamoto, Yusuke Kaneko, Yusuke Higa, Kohei Noda, Tomoyuki Sasaki, Masayuki Tanaka, Nobuhiro Kawatsuki, Hiroshi Ono

Proceedings Volume 11472, 114720Q (2020) https://doi.org/10.1117/12.2568902

KEYWORDS: Polarization, Liquid crystals, Holograms, Demultiplexers, Diffraction gratings, Singular optics

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Proceedings Article | 25 August 2017 Paper

Functionalized liquid crystal polymers generate optical and polarization vortex beams

Moritsugu Sakamoto, Yuki Nakamoto, Tran Minh Tien, Kotaro Kawai, Kohei Noda, Tomoyuki Sasaki, Nobuhiro Kawatsuki, Hiroshi Ono

Proceedings Volume 10361, 1036108 (2017) https://doi.org/10.1117/12.2273100

KEYWORDS: Photovoltaics, Spiral phase plates, Modulation, Phase shift keying, Crystal optics

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Proceedings Article | 16 March 2017 Presentation + Paper

Optical vortex generation by use of vector beam recorded azo-dye-doped liquid-crystal polymer composites

Moritsugu Sakamoto, Tomoyuki Sasaki, Tran Minh Tien, Kohei Noda, Nobuhiro Kawatsuki, Hiroshi Ono

Proceedings Volume 10120, 1012006 (2017) https://doi.org/10.1117/12.2249033

KEYWORDS: Optical vortices, Wavefronts, Liquid crystals, Polarization, Spatial light modulators, Laser beam diagnostics, Diffraction

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Proceedings Article | 15 February 2017 Paper

Fabrication of anisotropic diffractive optical element by using polarization drawing method based on galvanometer scanner

K. Noda, J. Matsubara, K. Kawai, M. Sakamoto, T. Sasaki, H. Okamoto, N. Kawatsuki, K. Goto, H. Ono

Proceedings Volume 10125, 101251K (2017) https://doi.org/10.1117/12.2250750

KEYWORDS: Polarization, Diffractive optical elements, Liquid crystals, Anisotropy, Fresnel lenses, Polarization control, Diffraction, Polymers, Ultraviolet radiation, Optical components

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Proceedings Article | 15 February 2017 Paper

Liquid crystal gratings for advanced control of polarized light propagation fabricated by one-step multiple beam holographic photoalignment

K. Kawai, M. Sakamoto, K. Noda, T. Sasaki, N. Kawatsuki, H. Ono

Proceedings Volume 10125, 101251I (2017) https://doi.org/10.1117/12.2250462

KEYWORDS: Liquid crystals, Polarization, Diffractive optical elements, Ultraviolet radiation, Light wave propagation, Holography, Polymers, Diffraction, Diffraction gratings, Laser beam diagnostics, Beam splitters, Modulation, Jones calculus

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Proceedings Article | 7 October 2014 Paper

Mechanoresponsive change in photoluminescent color of rod-like liquid-crystalline compounds and control of molecular orientation on photoaligned layer

Mizuho Kondo, Seiya Miura, Kentaro Okumoto, Mayuko Hashimoto, Ryohei Fukae, Nobuhiro Kawatsuki

Proceedings Volume 9182, 91820A (2014) https://doi.org/10.1117/12.2060552

KEYWORDS: Polymers, Annealing, Luminescence, Absorption, Liquid crystals, Absorbance, Polarization, Diffusion, Hydrogen, Ultraviolet radiation

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Proceedings Article | 8 September 2011 Paper

Molecularly oriented surface relief formation and multi-directionally oriented crossed gratings in photoreactive liquid crystalline copolymer films

Nobuhiro Kawatsuki, Ayaka Tashima, Mizuho Kondo, Hiroshi Ono, Akira Emoto, Makoto Okada, Shinji Matsui

Proceedings Volume 8114, 81140A (2011) https://doi.org/10.1117/12.892129

KEYWORDS: Holography, Diffraction gratings, Polarization, Liquid crystals, Diffraction, Liquids, Crystals, Helium cadmium lasers, Annealing, Ions

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Proceedings Article | 20 August 2005 Paper

Photoalignment control of liquid crystals on photo-cross-linkable polymer liquid crystal film and its application to polarization gratings

Nobuhiro Kawatsuki, Masaomi Kuwabara, Yasushi Matsuura, Tomoyuki Sasaki, Hiroshi Ono

Proceedings Volume 5936, 593608 (2005) https://doi.org/10.1117/12.618853

KEYWORDS: Liquid crystals, Polarization, Optical alignment, Diffraction gratings, Diffraction, Polymers, Annealing, Molecules, Anisotropy, Polymer thin films

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Proceedings Article | 5 November 2002 Paper

Photorefractive mesogenic composites for optical image processing

Akira Emoto, Hiroshi Ono, Nobuhiro Kawatsuki

Proceedings Volume 4802, (2002) https://doi.org/10.1117/12.452448

KEYWORDS: Composites, Image enhancement, Fourier transforms, Liquid crystals, 3D image reconstruction, Holography, Diffraction gratings, Image processing, Optical signal processing, Diffraction

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Proceedings Article | 11 December 2001 Paper

Optical birefringent film by photoreactive high- and low-molecular liquid crystal composites

Nobuhiro Kawatsuki, Takeya Sakai, Ann Xing, Takako Hasegawa, Tohei Yamamoto

Proceedings Volume 4463, (2001) https://doi.org/10.1117/12.449940

KEYWORDS: Composites, Liquid crystals, Photonic integrated circuits, Absorption, LCDs, Annealing, Polarization, Polymers, Polymer thin films, Ultraviolet radiation

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Proceedings Article | 15 June 2001 Paper

Optical phase conjugation by degenerate four-wave mixing in photorefractive mesogenic composites

Keiko Kitamura, Hiroshi Ono, Hideki Norisada, Nobuhiro Kawatsuki

Proceedings Volume 4279, (2001) https://doi.org/10.1117/12.429382

KEYWORDS: Phase conjugation, Composites, Liquid crystals, Reflectivity, Polymers, Four wave mixing, Nd:YAG lasers, Absorption, Helium neon lasers, Modulation

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Proceedings Article | 24 October 2000 Paper

Polymer-dissolved liquid crystal composites for use in real-time holography

Hiroshi Ono, Tomomi Kawamura, Hideki Norisada, Nobuhiro Kawatsuki

Proceedings Volume 4107, (2000) https://doi.org/10.1117/12.405312

KEYWORDS: Liquid crystals, Polymers, Holography, Composites, Diffraction, Molecules, Diffraction gratings, Photorefraction, Refractive index, Helium neon lasers

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Proceedings Article | 14 October 1998 Paper

Orientational photorefractive properties in polymer-dispersed liquid crystals with different polymer matrixes

Hiroshi Ono, Isao Saito, Nobuhiro Kawatsuki

Proceedings Volume 3475, (1998) https://doi.org/10.1117/12.326898

KEYWORDS: Composites, Polymers, Diffraction, Liquid crystals, Diffraction gratings, Polymethylmethacrylate, Photorefraction, Scanning electron microscopy, Glasses, Four wave mixing

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Proceedings Article | 23 July 1993 Paper

Second-harmonic generation studies of crosslinkable nonlinear optical copolymers

Khashayer Pakbaz, Nobuhiro Kawatsuki, Hans-Werner Schmidt

Proceedings Volume 1852, (1993) https://doi.org/10.1117/12.148456

KEYWORDS: Second-harmonic generation, Nonlinear optics, Chromophores, Glasses, Polymers, Absorption, Optical filters, Refractive index, Harmonic generation, Ultraviolet radiation

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Showing 5 of 17 publications

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