Study of Solar Pumped Laser for Fossil-fuel-free Energy Cycle Using Magnesium

Takayuki FUNATSU; Takashi YABE; Tomomasa OHKUBO; Sigeaki UCHIDA; Kunio YOSHIDA; Behgol BAGHERI; Takehiro OISHI; Kazuya DAITO; Manabu ISHIOKA; Yuichirou NAKAYAMA; Norihito YASUNAGA; Kouichirou KIDO; Masahiro NAKATSUKA; Minoru YOSHIDA; Shinji MOTOKOSHI; Yuji SATO; Choijil BAASANDASH; Kiyoshi KATO; Takagimi YANAGIDANI; Yoshiaki OKAMOTO

doi:10.2184/lsj.36.1153

High Power / High Energy Lasers and Their Applications

Study of Solar Pumped Laser for Fossil-fuel-free Energy Cycle Using Magnesium

Takayuki FUNATSU, Takashi YABE, Tomomasa OHKUBO, Sigeaki UCHIDA, Kunio YOSHIDA, Behgol BAGHERI, Takehiro OISHI, Kazuya DAITO, Manabu ISHIOKA, Yuichirou NAKAYAMA, Norihito YASUNAGA, Kouichirou KIDO, Masahiro NAKATSUKA, Minoru YOSHIDA, Shinji MOTOKOSHI, Yuji SATO, Choijil BAASANDASH, Kiyoshi KATO, Takagimi YANAGIDANI, Yoshiaki OKAMOTO

Author information

Takayuki FUNATSU
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Takashi YABE
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Tomomasa OHKUBO
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Sigeaki UCHIDA
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Kunio YOSHIDA
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Behgol BAGHERI
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Takehiro OISHI
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Kazuya DAITO
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Manabu ISHIOKA
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Yuichirou NAKAYAMA
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Norihito YASUNAGA
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Kouichirou KIDO
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Masahiro NAKATSUKA
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Minoru YOSHIDA
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Shinji MOTOKOSHI
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Yuji SATO
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Choijil BAASANDASH
Department of Mechanical Sciences and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku Tokyo, 152-8550
Kiyoshi KATO
Chitose Institute of Technology, Bibi 758-65, Chitose, Hokkaido, 066-8655
Takagimi YANAGIDANI
Konoshima Kagaku Co. Ltd., 80 Koda, takumachou, Miyoshi, Kagawa, 769-1103
Yoshiaki OKAMOTO
Okamoto Optic Co, 8-34 Haramachi, Isogo-ku, Yokohama, Kanagawa, 235-0008

Keywords: Solar pumped laser, Fresnel lens, Nd YAG, Cr Nd YAG ceramic, Energy cycle

JOURNAL FREE ACCESS

2008 Volume 36 Issue APLS Pages 1153-1156

DOI https://doi.org/10.2184/lsj.36.1153

Details

Abstract

A new type of solar pumped laser system that has features of high-efficiency and low cost due to the use of a Fresnel lens and a Cr codoped Nd:YAG ceramic laser medium is reported in this paper. Slope efficiencies of 7 to 9% have been achieved. The laser output of about 80 W was achieved with the combination of a 4-m² Fresnel lens and solar light chamber as a secondary power concentrator. The maximum output from a unit area of the Fresnel lens was 20 W/m², which is 2.8 times larger than the previous results with a mirror type concentrator.

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