Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Ken Kashiwagi"'
Publikováno v:
IEEE Photonics Journal, Vol 7, Iss 4, Pp 1-11 (2015)
In this paper, we investigated the imaging condition of asymmetric pulses on a temporal imaging (TI) system comprising two optical fibers and a phase modulator. We introduced a fitness function to evaluate the difference between target and output wav
Externí odkaz:
https://doaj.org/article/9af0af2b20654a9d9c1dce7d4f58720c
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 68:2246-2252
Phase noise induced by environmental disturbance was greatly reduced when the optical fiber was installed in an ultrastable environment. In this paper, the optical fiber length was 10 m, and the reduction in the phase noise power spectral density was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd01fcb54f781b24922e5b5ad7746f16
https://doi.org/10.1109/tim.2018.2876052
https://doi.org/10.1109/tim.2018.2876052
Autor:
Ken Kashiwagi, Motohiro Koriba, Tatsutoshi Shioda, Takuma Serizawa, Mitsutaka Ito, Takashi Kurokawa, Yosuke Tanaka
Publikováno v:
Optics Communications. 438:13-17
We succeeded in developing a broadband-frequency-variable laser comb with a mode spacing of 12.5 GHz in the near-infrared region. We found that the spectrum of optical pump pulses can be frequency shifted over the mode spacing frequency by a single-s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0f6997c4227a5f7f6376578716ebeea
https://doi.org/10.1016/j.optcom.2018.12.086
https://doi.org/10.1016/j.optcom.2018.12.086
Narrow Linewidth Electro-Optic Modulator Based Comb Generation with a Simple Modulator Configuration
Publikováno v:
Conference on Lasers and Electro-Optics.
We demonstrate a narrow linewidth electro-optic modulator based frequency comb with a simple modulator configuration. It was achieved by a servo control of a fragment of a high- frequency modulation signal through a low-frequency voltage-controlled o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bca099c750ce85019b9f4e342185a353
https://doi.org/10.1364/cleo_at.2020.jw2b.26
https://doi.org/10.1364/cleo_at.2020.jw2b.26
Publikováno v:
Optics Communications. 387:135-140
In this study, we introduced an optical pulse synthesizer (OPS) to measure frequency chirps of optical pulses by differential processing. The OPS has a single-chip integrated structure of all elements for the differential filtering and enables stable
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7f647da1b76a4095cd81789f4c13fc7e
https://doi.org/10.1016/j.optcom.2016.11.054
https://doi.org/10.1016/j.optcom.2016.11.054
Autor:
Masato Wada, Chaoyun Chen, Hajime Inaba, Kazumichi Yoshii, Kohei Ikeda, Feng-Lei Hong, Sho Okubo, Ken Kashiwagi
Publikováno v:
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Frequency-stabilized lasers at the telecom wavelengths are of great interest for a wide range of applications, including wavelength standards for optical communication systems [1], and an absolute frequency marker of an optical frequency comb. Especi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d1910f590290980badb187a13ea5a7a
https://doi.org/10.1109/cleoe-eqec.2019.8873309
https://doi.org/10.1109/cleoe-eqec.2019.8873309
Autor:
Kohei Ikeda, Chaoyun Chen, Kazumichi Yoshii, Sho Okubo, Ken Kashiwagi, Hajime Inaba, Feng-Lei Hong
Publikováno v:
Conference on Lasers and Electro-Optics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fac83eb5ba665fe56f74ac90c42bd4f
https://doi.org/10.1364/cleo_si.2019.sw3g.8
https://doi.org/10.1364/cleo_si.2019.sw3g.8
Publikováno v:
Conference on Lasers and Electro-Optics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::526c7e6931101b1bf2fdd78039b006e9
https://doi.org/10.1364/cleo_si.2019.sw3g.3
https://doi.org/10.1364/cleo_si.2019.sw3g.3
Autor:
Ken Kashiwagi, Sho Okubo, Masato Wada, Hajime Inaba, Feng-Lei Hong, Kohei Ikeda, Kazumichi Yoshii
Publikováno v:
Optics Express. 28:2166
We demonstrate the third harmonic generation of a 1542-nm laser using a dual-pitch periodically poled lithium niobate waveguide with a conversion efficiency of 66%/W2. The generated 514-nm light is used for saturation spectroscopy of molecular iodine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fccff42981afcf1f41e1b26951ca0d0a
https://doi.org/10.1364/oe.381961
https://doi.org/10.1364/oe.381961
Autor:
Eiji Kambe, Masato Ishizuka, Hidenori Genda, Yuka Fujii, Masahiro Ogihara, Masahiko Hayashi, Yutaka Hayano, Jungmi Kwon, Masayuki Kuzuhara, Yosuke Tanaka, Tetsuya Nagata, Yasunori Hori, Eiichiro Kokubo, Tomoyuki Kudo, Haruka Baba, Ken Kashiwagi, Tadashi Nakajima, Klaus W. Hodapp, Ko Hosokawa, Donald N. B. Hall, Norio Narita, Naruhisa Takato, Nobuhiko Kusakabe, Yuji Ikeda, Wako Aoki, Takashi Kurokawa, Masahiro N. Machida, Hiroshi Terada, Jun Nishikawa, Takayuki Kotani, Jun-Ichi Morino, Hajime Kawahara, Hiroki Harakawa, Jun Hashimoto, Guyon Olivier, Akihiko Fukui, Bun'ei Sato, Hideyuki Izumiura, Hiroyuki Tako Ishikawa, Daehyeon Oh, Akitoshi Ueda, Hiroshi Suto, Motohide Tamura, Hideki Takami, Tsukasa Kokubo, Masashi Omiya, Taro Matsuo, Shogo Nishiyama, S. Jacobson, Tomonori Usuda, Masahiro Ikoma, Takahiro Mori, Mihoko Konishi, Teruyuki Hirano, Masahide Hidai, Tomoyasu Yamamuro, Nemanja Jovanovic
Publikováno v:
Ground-based and Airborne Instrumentation for Astronomy VII.
The Infrared Doppler (IRD) instrument is a fiber-fed high-resolution NIR spectrometer for the Subaru telescope covering the Y,J,H-bands simultaneously with a maximum spectral resolution of 70,000. The main purpose of IRD is a search for Earth-mass pl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::81faf697899f72df8d48e1932f86d318
https://doi.org/10.1117/12.2311836
https://doi.org/10.1117/12.2311836