JAXA Repository / AIREX 未来へ続く、宙(そら)への英知

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Other TitleDevelopment of solar-pumped solid-state lasers for space solar energy utilization
Author(jpn)佐伯 拓; 本越 伸二; 内田 茂明; 今崎 一夫; 中塚 正大; 新野 正之; 森 雅裕
Author(eng)Saiki, Taku; Motokoshi, Shinji; Uchida, Shigeaki; Imasaki, Kazuo; Nakatsuka, Masahiro; Niino, Masayuki; Mori, Masahiro
Author Affiliation(jpn)レーザー技術総合研究所; レーザー技術総合研究所; 東京工業大学; レーザー技術総合研究所; 大阪大学 レーザー核融合研究センター; 宇宙航空研究開発機構; 宇宙航空研究開発機構
Author Affiliation(eng)Institute for Laser Technology; Institute for Laser Technology; Tokyo Institute of Technology; Institute for Laser Technology; Osaka University Institute of Laser Engineering; Japan Aerospace Exploration Agency; Japan Aerospace Exploration Agency
Issue Date2006-06
PublisherInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA/ISAS)
Publication title第25回宇宙エネルギーシンポジウム 平成17年度
The Twenty-fifth Space Energy Symposium March 10, 2006
Start page84
End page88
Publication date2006-06
AbstractSpace solar power station needs an energetic-effective lasers as an energy transfer device from partially coherent solar light to coherent laser light. A concept of active-mirror amplifier with transparent Nd/Cr:YAG ceramics is proposed under consideration how to convert a wide spectrum of sun-light to monochromatic laser light. New ceramic material pumped by an arc-metal-halide lamp has been implemented experimentally as a fundamental prototype for the space solar power station. CW laser light generated in a 1,064 nm Nd:YAG master laser oscillator was amplified so that a spatial mode of laser output has been improved to a quasi-single mode. The maximum output laser power obtained was up to 3 W with an input lamp power of 9 W resulting in an optical-optical conversion efficiency of 33 percent that was close to the theoretical prediction of 40 percent with keeping spatial beam quality.
Keywordsspace solar power system; solar power satellite; coherent laser light; active mirror amplifier; laser power beaming; Nd:YAG laser; high power laser; 宇宙太陽光利用システム; 太陽発電衛星; コヒーレントなレーザ光; アクティブミラー増幅器; レーザパワービーミング; Nd:YAGレーザ; 高出力レーザ
Document TypeConference Paper
JAXA Categoryシンポジウム・研究会

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