Generation of Quasi-CW Deep Ultraviolet Light below 200 nm by Two Successive Cavity Enhanced Second Harmonic Generators
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概要
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By frequency quadrupling a picosecond pulse train from a Ti:sapphire laser with a wavelength of 798 nm and a repetition rate of 82 MHz, we generated a coherent deep ultraviolet light below 200 nm. Two frequency-doubling stages take place in resonant cavities that can increase conversion efficiency. This allows an overall efficiency of 4.3% and produces an output power of up to 60 mW. In the second stage, in which a KBe2BO3F2 (KBBF) crystal was employed as a nonlinear medium, conversion efficiency is increased by about three times compared with that of the single-pass configuration. Taking into account reflective loss, conversion efficiency is improved five times.
- 2011-04-25
著者
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Zhang Yun
Department Of Biomedical Engineering Key Laboratory For Biomedical Engineering Of Ministry Of Educat
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Kanai Teruto
Institute For Solid State Physics University Of Tokyo
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Watanabe Masayoshi
Department Of Chemistry & Biotechnology Yokohama National University
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Watanabe Shuntaro
Institute For Solid State Physics University Of Tokyo
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Watanabe Nobuyoshi
Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
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Okada-Shudo Yoshiko
Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
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Hyodo Masaharu
Kobe Advanced ICT Research Center, National Institute of Information and Communications Technology, Kobe 651-2492, Japan
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Wang Xiaoyang
Technical Institute of Physics and Chemistry, China Academy of Science, P. O. Box 2711, Beijing 100080, China
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Zhu Yong
Technical Institute of Physics and Chemistry, China Academy of Science, P. O. Box 2711, Beijing 100080, China
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Chen Chuangtian
Technical Institute of Physics and Chemistry, China Academy of Science, P. O. Box 2711, Beijing 100080, China
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Watanabe Shuntaro
Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Watanabe Masayoshi
Department of Engineering Science, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
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Watanabe Masayoshi
Deparment of Pathology, Shiga University of Medical Science, School of Medicine
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