Dr. Kenji Kitamura Profile

Dr. Kenji Kitamura

Fellow at National Institute for Materials Science

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 8 January 2008 Paper

Reversible photomodification of LiNbO3 and LiTaO3 by femtosecond laser pulses

Vygantas Mizeikis, Saulius Juodkazis, Markas Sudzius, Hiroaki Misawa, Eugene Gamaly, Andrei Rode, Wieslaw Krolikowski, Kenji Kitamura

Proceedings Volume 6801, 680106 (2008) https://doi.org/10.1117/12.759232

KEYWORDS: Refractive index, Modulation, Femtosecond phenomena, Crystals, Absorption, Diffraction gratings, Pulsed laser operation, Iron, Photovoltaics, Diffraction

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Proceedings Article | 24 August 2006 Paper

Influence of photorefractive effect on optical parametric oscillator's properties in periodically poled Mg-doped stoichiometric LiTaO3

Youwen Liu, Yannan Yan, Haixia Ma, Suno Kurimura, Shunji Takekawa, Masaru Nakamura, Kenji Kitamura

Proceedings Volume 6314, 63141W (2006) https://doi.org/10.1117/12.683774

KEYWORDS: Crystals, Optical parametric oscillators, Birefringence, Photorefraction, Lithium, Temperature metrology, Photovoltaics, Laser crystals, Crystallography, Magnesium

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Proceedings Article | 9 June 2006 Paper

Holographic gratings in pure and Mg-doped near-stoichiometric LiTaO₃ induced by deep-ultraviolet light

F. Juvalta, Ph. Dittrich, Germano Montemezzani, M. Jazbinsek, Peter Günter, Shunji Takekawa, Kenji Kitamura

Proceedings Volume 6252, 62520A (2006) https://doi.org/10.1117/12.676517

KEYWORDS: Crystals, Ultraviolet radiation, Holography, Diffraction gratings, Magnesium, Diffraction, Photorefraction, Deep ultraviolet, Absorption, Time metrology

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Proceedings Article | 16 January 2006 Paper

Pulsed laser second harmonic generation and thermal dephasing in periodically poled crystals

Oleg Louchev, Nan Ei Yu, Sunao Kurimura, Kenji Kitamura

Proceedings Volume 6038, 60380S (2006) https://doi.org/10.1117/12.638211

KEYWORDS: Crystals, Second-harmonic generation, Laser crystals, Pulsed laser operation, Absorption, Thermal effects, Temperature metrology, Crystallography, Harmonic generation, Chromium

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Proceedings Article | 4 April 2005 Paper

A promising new UV/VUV nonlinear optical crystal: SrAlF₅

Kiyoshi Shimamura, Encarnacion Villora, Kenichi Muramatsu, Hideo Kimura, Kenji Kitamura, Noboru Ichinose

Proceedings Volume 5723, (2005) https://doi.org/10.1117/12.608764

KEYWORDS: Crystals, Refractive index, Second-harmonic generation, Mercury, Transparency, Nonlinear crystals, Ultraviolet radiation, Polarization, Cadmium, Beam propagation method

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Proceedings Article | 28 January 2005 Paper

Investigation on dark decay of two-color holograms in near-stoichiometric LiNbO₃ and LiTaO₃

Youwen Liu, Kenji Kitamura, Shunji Takekawa, Ganesan Ravi, Masaru Nakamura, Hideki Hatano

Proceedings Volume 5646, (2005) https://doi.org/10.1117/12.572502

KEYWORDS: Crystals, Holograms, Absorption, Holography, Temperature metrology, Lithium niobate, Iron, Data storage, Laser crystals, Time metrology

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Proceedings Article | 22 October 2004 Paper

Light-induced charge transport in Mn-doped near-stoichiometric LiNbO₃ under cw UV illumination

Youwen Liu, Kenji Kitamura, Shunji Takekawa, Ganesan Ravi, Masaru Nakamura, Hideki Hatano

Proceedings Volume 5560, (2004) https://doi.org/10.1117/12.557464

KEYWORDS: Crystals, Absorption, Lithium, Manganese, Ultraviolet radiation, Niobium, Polarons, Photovoltaics, Continuous wave operation

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Proceedings Article | 18 August 2004 Paper

High-quality waveguides by reverse proton exchange in stoichiometric lithium tantalate

Marco Marangoni, Roberto Osellame, Roberta Ramponi, Shunji Takekawa, Masaru Nakamura, Kenji Kitamura

Proceedings Volume 5451, (2004) https://doi.org/10.1117/12.545459

KEYWORDS: Waveguides, Annealing, Refractive index, Lithium, Laser damage threshold, Diffusion, Modeling, Ions, Nonlinear dynamics, Fabrication

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Proceedings Article | 17 June 2004 Paper

Long lifetime of two-color nonvolatile holograms in near-stoichiometric lithium tantalate crystals

Kenji Kitamura, Youwen Liu, Shunji Takekawa, Hideki Hatano, Yasunori Furukawa

Proceedings Volume 5362, (2004) https://doi.org/10.1117/12.528686

KEYWORDS: Crystals, Holograms, Absorption, Lithium, Holography, Data storage, Crystallography, Lithium niobate, Laser crystals, Niobium

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Proceedings Article | 16 June 2003 Paper

Ferroelectric nanodomain patterning in a stoichiometric LiNbO3 crystal

Shinji Higuchi, Kazuya Terabe, Masaru Nakamura, Shunji Takekawa, Sixin Wu, Yoshihiko Gotoh, Kenji Kitamura

Proceedings Volume 4970, (2003) https://doi.org/10.1117/12.479165

KEYWORDS: Crystals, Atomic force microscopy, Polarization, Metals, Optical lithography, Crystallography, Microscopes, Polishing, Nanodomains, Doping

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Proceedings Article | 17 September 2002 Paper

Two-color photorefractive holography in Mn-doped near-stoichiometric lithium niobate crystals

Youwen Liu, Kenji Kitamura, Shunji Takekawa, Masaru Nakamura, Ganesan Ravi, Hideki Hatano, Takashi Yamaji

Proceedings Volume 4930, (2002) https://doi.org/10.1117/12.483360

KEYWORDS: Crystals, Holography, Absorption, Holograms, Diffraction, Polarons, Lithium niobate, Laser crystals, Crystallography, Manganese

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Proceedings Article | 17 September 2002 Paper

Intensity dependence of two-color holography performance in Tb-doped near-stoichiometric LiNbO3

Kenji Kitamura, Youwen Liu, Shunji Takekawa, Masaru Nakamura, Hideki Hatano, Takashi Yamaji

Proceedings Volume 4930, (2002) https://doi.org/10.1117/12.483361

KEYWORDS: Diffraction, Holography, Crystals, Holograms, Ultraviolet radiation, Laser crystals, Crystallography, Absorption, Data storage, Lithium niobate

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Proceedings Article | 4 June 2001 Paper

Nonvolatile and quasi-nonvolatile holographic recording in near-stoichiometric lithium niobate doubly doped with Tb and Fe

Myeongkyu Lee, Shunji Takekawa, Yasunori Furukawa, Kenji Kitamura

Proceedings Volume 4296, (2001) https://doi.org/10.1117/12.429463

KEYWORDS: Absorption, Crystals, Iron, Ultraviolet radiation, Terbium, Holography, Holograms, Diffraction, Lithium niobate, Doping

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Proceedings Article | 7 February 2001 Paper

Holographic properties of doped stoichiometric LiNbO3 crystals

Shiquan Tao, Myeongkyu Lee, Kenji Kitamura, Hideki Hatano, Ludwig Galambos, Lambertus Hesselink

Proceedings Volume 4085, (2001) https://doi.org/10.1117/12.416874

KEYWORDS: Crystals, Holography, Iron, Multiplexing, Holograms, Diffraction, Ultraviolet radiation, Diffraction gratings, Terbium, Modulation

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Proceedings Article | 18 June 1998 Paper

Improved properties of stoichiometric lithium niobate for holographic data storage material

Kenji Kitamura, Yasunori Furukawa, Satoru Tanaka, Takashi Yamaji, Hideki Hatano

Proceedings Volume 3291, (1998) https://doi.org/10.1117/12.310574

KEYWORDS: Crystals, Digital holography, Holography, Diffraction, Data storage, Holograms, Polarization, Lithium niobate, Photovoltaics, Laser crystals

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