Optical-referenceless optical frequency counter with twelve-digit absolute accuracy
Ishizawa, Atsushi, Nishikawa, Tadashi, Hitachi, Kenichi, Akatsuka, Tomoya, Oguri, Katsuya
Published in Scientific reports (30.05.2023)
Published in Scientific reports (30.05.2023)
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Journal Article
Phase-noise characteristics of a 25-GHz-spaced optical frequency comb based on a phase- and intensity-modulated laser
Ishizawa, Atsushi, Nishikawa, Tadashi, Mizutori, Akira, Takara, Hidehiko, Takada, Atsushi, Sogawa, Tetsuomi, Koga, Masafumi
Published in Optics express (02.12.2013)
Published in Optics express (02.12.2013)
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Journal Article
Spatially resolved multimode excitation for smooth supercontinuum generation in a SiN waveguide
Kou, Rai, Ishizawa, Atsushi, Yoshida, Koki, Yamamoto, Noritsugu, Xu, Xuejun, Kikkawa, Yugo, Kawashima, Kota, Aihara, Takuma, Tsuchizawa, Tai, Cong, Guangwei, Hitachi, Kenichi, Nishikawa, Tadashi, Oguri, Katsuya, Yamada, Koji
Published in Optics express (13.02.2023)
Published in Optics express (13.02.2023)
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Journal Article
Direct f-3f self-referencing using an integrated silicon-nitride waveguide
Ishizawa, Atsushi, Kawashima, Kota, Kou, Rai, Xu, Xuejun, Tsuchizawa, Tai, Aihara, Takuma, Yoshida, Koki, Nishikawa, Tadashi, Hitachi, Kenichi, Cong, Guangwei, Yamamoto, Noritsugu, Yamada, Koji, Oguri, Katsuya
Published in Optics express (14.02.2022)
Published in Optics express (14.02.2022)
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Journal Article
Sub‐30‐fs fibre‐coupled electro‐optic modulation comb at 1.5 μm with a 25‐GHz repetition rate
Kikkawa, Yugo, Ishizawa, Atsushi, Kou, Rai, Xu, Xuejun, Yoshida, Koki, Tsuchizawa, Tai, Aihara, Takuma, Nishikawa, Tadashi, Cong, Guanwei, Hitachi, Kenichi, Yamamoto, Noritsugu, Yamada, Koji, Oguri, Katsuya
Published in Electronics letters (01.06.2023)
Published in Electronics letters (01.06.2023)
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Journal Article
Efficient Carrier-Envelope Offset Locking with a Simplified Configuration of an $f$-to-$2f$ Interferometer
Ishizawa, Atsushi, Nishikawa, Tadashi, Aozasa, Shinichi, Mori, Atsushi, Tadanaga, Osamu, Asobe, Masaki, Nakano, Hidetoshi
Published in Japanese Journal of Applied Physics (01.02.2011)
Published in Japanese Journal of Applied Physics (01.02.2011)
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Journal Article
Anisotropy in Ultrafast Carrier and Phonon Dynamics in p-Type Heavily Doped Si
Kato, Keiko, Ishizawa, Atsushi, Oguri, Katsuya, Tateno, Kouta, Tawara, Takehiko, Gotoh, Hideki, Kitajima, Masahiro, Nakano, Hidetoshi
Published in Japanese Journal of Applied Physics (01.10.2009)
Published in Japanese Journal of Applied Physics (01.10.2009)
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Journal Article
Development and applications of a compact hybrid tabletop terawatt chirped-pulse amplification Ti:sapphire-Nd:glass laser for x-ray lasing and harmonic generation
Ganeev, Rashid A, Kanai, Teruto, Ishizawa, Atsushi, Ozaki, Tsuneyuki, Kuroda, Hiroto
Published in Applied optics (2004) (20.02.2004)
Published in Applied optics (2004) (20.02.2004)
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Journal Article
Low-noise optical measurement of sound using midfringe locked interferometer with differential detection
Ishikawa, Kenji, Shiraki, Yoshifumi, Moriya, Takehiro, Ishizawa, Atsushi, Hitachi, Kenichi, Oguri, Katsuya
Published in The Journal of the Acoustical Society of America (01.08.2021)
Published in The Journal of the Acoustical Society of America (01.08.2021)
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Journal Article
Low-loss erbium-incorporated rare-earth oxide waveguides on Si with bound states in the continuum and the large optical signal enhancement in them
Xu, Xuejun, Inaba, Tomohiro, Tsuchizawa, Tai, Ishizawa, Atsushi, Sanada, Haruki, Tawara, Takehiko, Omi, Hiroo, Oguri, Katsuya, Gotoh, Hideki
Published in Optics express (06.12.2021)
Published in Optics express (06.12.2021)
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Journal Article
Observation of Acoustically Induced Dressed States of Rare-Earth Ions
Ohta, Ryuichi, Lelu, Grégoire, Xu, Xuejun, Inaba, Tomohiro, Hitachi, Kenichi, Taniyasu, Yoshitaka, Sanada, Haruki, Ishizawa, Atsushi, Tawara, Takehiko, Oguri, Katsuya, Yamaguchi, Hiroshi, Okamoto, Hajime
Published in Physical review letters (19.01.2024)
Published in Physical review letters (19.01.2024)
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Journal Article
Optical nonlinearity enhancement with graphene-decorated silicon waveguides
Ishizawa, Atsushi, Kou, Rai, Goto, Takahiro, Tsuchizawa, Tai, Matsuda, Nobuyuki, Hitachi, Kenichi, Nishikawa, Tadashi, Yamada, Koji, Sogawa, Tetsuomi, Gotoh, Hideki
Published in Scientific reports (12.04.2017)
Published in Scientific reports (12.04.2017)
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Journal Article
Optical frequency distribution using laser repeater stations with planar lightwave circuits
Akatsuka, Tomoya, Goh, Takashi, Imai, Hiromitsu, Oguri, Katsuya, Ishizawa, Atsushi, Ushijima, Ichiro, Ohmae, Noriaki, Takamoto, Masao, Katori, Hidetoshi, Hashimoto, Toshikazu, Gotoh, Hideki, Sogawa, Tetsuomi
Published in Optics express (30.03.2020)
Published in Optics express (30.03.2020)
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Journal Article
Simple method for stabilizing an optical frequency comb to an optical reference without an RF signal generator
Ishizawa, Atsushi, Hitomi, Kenya, Hara, Kazutaka, Hitachi, Kenichi, Nishikawa, Tadashi, Sogawa, Tetsuomi, Gotoh, Hideki
Published in OSA continuum (15.05.2019)
Published in OSA continuum (15.05.2019)
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Journal Article
Dynamical Behavior of Higher Harmonic Generation from a Picosecond-Laser-Produced Solid Surface Plasma
Atsushi Ishizawa, Atsushi Ishizawa, Teruto Kanai, Teruto Kanai, Tsuneyuki Ozaki, Tsuneyuki Ozaki, Hiroto Kuroda, Hiroto Kuroda
Published in Japanese Journal of Applied Physics (01.02.2001)
Published in Japanese Journal of Applied Physics (01.02.2001)
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Journal Article
Generation of 120-fs laser pulses at 1-GHz repetition rate derived from continuous wave laser diode
Ishizawa, Atsushi, Nishikawa, Tadashi, Mizutori, Akira, Takara, Hidehiko, Nakano, Hidetoshi, Sogawa, Tetsuomi, Takada, Atsushi, Koga, Masafumi
Published in Optics express (07.11.2011)
Published in Optics express (07.11.2011)
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Journal Article