Volume Grating Induced by a Self-Trapped Long Filament of Femtosecond Laser Pulses in Silica Glass
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概要
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A self-trapped filament of ultrashort laser pulses can induce a 10–500 μm-long region of refractive-index change in silica glass. The translation of filament perpendicular to the optical axis induces a layer of refractive-index change with a thickness of 2 μm. We stacked the layers periodically and fabricated volume gratings. We irradiated a He–Ne laser beam at the wavelength of 632.8 nm onto the gratings at the Bragg angle. The maximum diffraction efficiency was 74.8% with the grating that had the period of 3 μm and the thickness of 150 μm.
- 2003-11-15
著者
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Nishii Junji
Photonics Research Institute Kansai Center National Institute Of Advanced Industrial Science And Tec
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Kintaka Kenji
Photonics Research Institute Kansai Center National Institute Of Advanced Industrial Science And Tec
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Watanabe Wataru
Department Of Applied Physics Graduate School Of Engineering Osaka University
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Itoh Kazuyoshi
Department Of Applied Chemistry Faculty Of Engineering & High Technology Research Center Kansai
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Yamada Kazuhiro
Department Of Applied Physics And Physico-informatics Faculty Of Science And Technology Keio University
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Yamada Kazuhiro
Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
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Nishii Junji
Photonics Research Institute, Kansai Center, National Institute of Advanced Industrial Science and Technology, 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan
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YAMADA Kazuhiro
Department of Agricultural Chemistry, Tokyo University of Agriculture
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