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Your search keyword '"Arisawa, Takashi"' showing total 114 results
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114 results on '"Arisawa, Takashi"'

1. High-repetition rate 1-J green laser system

Author

Tei, Kazuyoku, Kato, Masaaki, Matsuoka, Fumiaki, Niwa, Yoshito, Maruyama, Yoichiro, Matoba, Tohru, and Arisawa, Takashi

Subjects
Nd-YAG lasers -- Research, Oscillators (Electronics) -- Research, Astronomy, Physics
Abstract

A laser-diode-pumped high-repetition-rate zigzag slab Nd:YAG oscillator-amplifier system is developed as the pumping source of a high-average-power and terawatt Ti:sapphire chirped pulse amplification laser system. This system can produce a greater than 2-J high-energy fundamental laser pulse at a repetition rate of 100 Hz. The frequency-doubled energy with a diffusion-bonded KTP crystal is 1 J at a repetition rate of 100 Hz.

Published
1999

3. Ray-tracing model for stretcher dispersion calculation

Author

Zhang, Zhigang, Yagi, Takashi, and Arisawa, Takashi

Subjects
Ray tracing -- Models, Dispersion -- Analysis, Pulse amplifiers -- Analysis, Laser pulses, Ultrashort -- Analysis, Astronomy, Physics
Abstract

We propose a ray-tracing model that provides a clear physical picture and simple formulas for grating pair stretcher dispersion calculations. With this model we can easily demonstrate why and to what extent the stretcher and compressor are opposite quantitatively without using a Fourier transform. The dispersion calculation shows that the spherical aberration in the stretcher decreases fourth-order dispersion compared with an aberration-free stretcher. In a chirped pulse amplification system, this fourth order can help to reduce residual fourth-order dispersion. The effect of the finite beam size and the misalignment are also considered. Key words: Ultrafast phenomena, ultrashort pulses, chirped pulse amplification, stretcher.

Published
1997

4. Two-step selective photoionization of rubidium by using a Ti:sapphire laser

Author

Tamura, Koji, Oba, Masaki, and Arisawa, Takashi

Subjects
Lasers -- Research, Rubidium -- Research, Isotope separation -- Methods, Astronomy, Physics
Abstract

A pulsed Ti:sapphire laser (TSL) is applied for what is, to our knowledge, the first time to laser isotope separation. A collimated beam of a rubidium atom with a natural isotope composition (85Rb, 72%; 87Rb, 28%) is excited selectively from the ground state to the 5 squared P(sub 2/3) state by irradiation of the single-longitudinal-mode TSL, and is photoionized by successive UV radiation. Ion spectra of each isotope indicate that each isotope is selectively photoionized.

Published
1993

8. Self-Alignment Technologies of Organic Electronic Devices and Its Integrated Panels

Author

Inoue Toyokazu, Shibata Miki, Shimada Hiroyuki, Naka Shigeki, Matsushita Yohsuke, Okada Hiroyuki, Ooe Masanori, Miyashita Takuya, Usui Kazuma, Yanagi Junya, Nagai Tsutom, Kakumoto Hidetoshi, Sato Ryuichi, Hyodo Takahiro, Onnagawa Hiroyoshi, Arisawa Takashi, Miyabayashi Takeshi, and Takemura Hitoshi

Subjects
Organic field-effect transistor, Materials science, Polymers and Plastics, business.industry, Organic Chemistry, Multiple integration, Scan line, Photodiode, law.invention, law, Self alignment, Electrode, Materials Chemistry, OLED, Optoelectronics, Electronics, business
Abstract

Self-alignment (SA) technologies and multiple integration of organic electronic devices are introduced. For obtaining higher device performance, self-alignment technology is effective. For example, SA organic field effect transistor (OFET) can be realized using back surface exposure for gate electrode as a mask and lift-off technique for formation of source/ drain regions. Another self alignment technology under study is formation of emission region in organic light emitting diode (OLED) using ink-jet printing (IJP) technique, where ink jet printed dot becomes emission region. In the case of multiple integration technology, face-to-face emission panel named "Dual Drive & Emission Panel (DDE)" with stacked two set OLED with common scan line and two set of data lines and combination of emission and photo detection named "Bi-Function Matrix Panel (Bi-Matrix)" with stacked OLED and organic photodiode (OPD) can be realized. These approaches will be expected for novel application.

Published
2005
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13. Demonstration of a Transient High Gain Soft X-Ray Laser for Neon-Like Argon

Author

Lu, Peixiang, primary, Kawachi, Tetsuya, additional, Suzuki, Masayuki, additional, Sukegawa, Kouta, additional, Namba, Shinichi, additional, Tanaka, Momoko, additional, Hasegawa, Noboru, additional, Nagashima, Keisuke, additional, Daido, Hiroyuki, additional, Arisawa, Takashi, additional, Kato, Yoshiaki, additional, and Fiedorowicz, Henryk, additional

Published
2002
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18. Coherence properties and applications of a transient collisional excitation type silver soft x-ray laser at Advanced Photon Research Center.

Author

Daido, Hiroyuki, Nagashima, Keisuke, Kishimoto, Maki, Kado, Masataka, Kawachi, Tetsuya, Hasegawa, Noboru, Tanaka, Momoko, Sukegawa, Kouta, Tai, Renzhong, Lu, Peixiang, Tang, Huajing, Nishiuchi, Mamiko, Sasaki, Akira, Arisawa, Takashi, Kato, Yoshiaki, Namikawa, Kazumichi, and Rus, Bedrich

Subjects
GRENZ rays, COHERENCE (Physics), LASER interferometers
Abstract

A ∼10J, pico-second laser pumped transient collisional excitation type silver soft x-ray laser at 13.9 nm routinely delivers collimated saturated amplification soft x-ray laser pulses with an energy of 20 µJ at the Advanced Photon Research Center. The soft x-ray laser pulse contains reasonable spatial coherence length of 0.1 mm at the place 1 m away from the x-ray laser source. The pulse width and energy are a few ps and a few tens of µJ, which is sufficient for imaging with pico-second time resolution. We describe the three kinds of subjects including the spatial coherence measurement of the silver x-ray laser using a multi-slit array, the wave front division type soft x-ray interferometer using a Lloyd's mirror and the measurement of domain size distributions in a single BaTiO[SUB3] ferroelectrics crystal ar room temperature. As for the interferometer experiment, we have obtained a 50 µm diameter wire image with fringe shifts. As for the speckle measurement, the spatial correlation and the spatial power spectrum, which are related to the domain size distribution, have been characterized. [ABSTRACT FROM AUTHOR]

Published
2002

30. LD-pumped 0.62-J 105-W Nd:YAG green laser

Author

Tei, Kazuyoku, primary, Kato, Masaaki, additional, Niwa, Yoshito, additional, Harayama, Sayaka, additional, Maruyama, Yoichiro, additional, Matoba, Tohru, additional, and Arisawa, Takashi, additional

Published
1998
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31. High-energy flash-lamp-pumped Ti-sapphire laser for Yb:glass CPA

Author

Nishimura, Akihiko, primary, Ohzu, Akira, additional, Sugiyama, Akira, additional, Maruyama, Yoichiro, additional, Arisawa, Takashi, additional, Takuma, Hiroshi, additional, Nees, John A., additional, Biswal, Subrat, additional, Mourou, Gerard A., additional, Erickson, Edward, additional, Owada, Susumu, additional, and Satou, Sousuke, additional

Published
1998
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39. High Power Laser Diode Arrays for pumping Solid State Laser

Author

Kan, H., primary, Kanzaki, T., additional, Miyajima, H., additional, Hiruma, T., additional, Yamanaka, M., additional, Kiriyama, H., additional, Yashida, T., additional, Izawa, Y., additional, Nakai, S., additional, Tsunekane, M., additional, Taguchi, N., additional, Inaba, H., additional, Oba, Masaki, additional, Kato, Masaaki, additional, Muramatu, Toshiaki, additional, Maruyama, Yoichiro, additional, Arisawa, Takashi, additional, SEKITA, Hitoshi, additional, KASAMATU, Tadashi, additional, Owada, S., additional, Mukaide, Y., additional, Okada, M., additional, Taniguchi, T., additional, Tokura, Y., additional, Tamada, H., additional, Fujita, T., additional, Chen, J., additional, Kusaba, M., additional, Tsunawaki, Y., additional, Ohigashi, N., additional, Fujita, M., additional, Imasaki, K., additional, Mima, K., additional, Ohkubo, Koichi, additional, Nakao, Naoya, additional, Ishida, Takayuki, additional, Watanabe, Takeshi, additional, Okuda, Yoshihiko, additional, Noguchi, M., additional, Kuruma, S., additional, Yokozawa, Takeshi, additional, Hara, Hiroshi, additional, TADA, Akifumi, additional, ITO, Shinji, additional, Minamitani, Yasushi, additional, Nakatani, Hajime, additional, Doshida, M., additional, Obara, M., additional, Kemmochi, Yoichi, additional, Matsuzaka, Fumio, additional, ISHIHARA, Tomohiro, additional, YASUO, Hiroyuki, additional, YAMAGUCHI, Masayoshi, additional, Asaba, Kaoru, additional, Isii, Shoken, additional, Imoto, Hiroshi, additional, Kunimori, Hiroo, additional, Ueyama, Hiroki, additional, Hashida, Masaki, additional, Sakabe, Shuji, additional, Kuge, Tomoyuki, additional, Nakano, Genji, additional, Liu, Anping, additional, Ueda, Kenichi, additional, and Kametani, Kouichi, additional

Published
1996
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43. レーザーエネルギー応用

Author

Rousse, A., primary, Ninomiya, S., additional, Yuan, G., additional, Murai, K., additional, Kodama, R., additional, Daido, H., additional, Kato, Y., additional, Nakai, S., additional, Miyazawa, K., additional, Hirose, H., additional, Hara, T., additional, Yamashita, Y., additional, Iwai, S., additional, Kodate, K., additional, Aoyagi, Y., additional, Ando, K., additional, Zhang, T., additional, Sharma, L. B., additional, Nakatsuka, M., additional, Uematsu, H., additional, Izawa, Y., additional, Kitada, T., additional, Yamanaka, C., additional, Hasegawa, N., additional, Nakagawa, H., additional, Tsutaki, T., additional, Yoneda, H., additional, Ueda, K., additional, Takuma, H., additional, Matsuoka, S., additional, Ando, A., additional, Urusihara, S., additional, Morio, N., additional, Kawasaki, T., additional, Suzuki, K., additional, Amano, S., additional, Miyanaga, N., additional, Kanabe, T., additional, Okuda, I., additional, Yashiro, H., additional, Matsumoto, Y., additional, Takahashi, E., additional, Miura, E., additional, Owadano, Y., additional, Miyagawa, Shima, additional, Yasufuku, Kenji, additional, Yoshida, Hiroki, additional, Sakagami, Yukio, additional, Ohashi, Gen, additional, Mizutani, Tomonori, additional, KMETIK, V., additional, YOSHIDA, H., additional, FUJITA, H., additional, YAMANAKA, T., additional, Kusaba, Mitsuhiro, additional, Nakashima, Nobuaki, additional, Tsunawaki, Yoshiaki, additional, MITANI, Yukio, additional, EDA, Gakuji, additional, UJIHARA, Hideyuki, additional, WADA, Kazuhiro, additional, Akaoka, Katsuaki, additional, Wakaida, Ikuo, additional, and Arisawa, Takashi, additional

Published
1995
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