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Proceedings Paper

1.5-μm high average power laser amplifier using an Er,Yb:glass planar waveguide for coherent Doppler LIDAR
Author(s): Takeshi Sakimura; Yojiro Watanabe; Toshiyuki Ando; Shumpei Kameyama; Kimio Asaka; Hisamichi Tanaka; Takayuki Yanagisawa; Yoshihito Hirano; Hamaki Inokuchi
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Paper Abstract

We have developed a 1.5-μm eye-safe wavelength high average power laser amplifier using an Er,Yb:glass planar waveguide for coherent Doppler LIDAR. Large cooling surface of the planar waveguide enabled high average power pumping for Er,Yb:glass which has low thermal fracture limit. Nonlinear effects are suppressed by the large beam size which is designed by the waveguide thickness and the beam width of the planar direction. Multi-bounce optical path configuration and high-intensity pumping provide high-gain and high-efficient operation using three-level laser material. With pulsed operation, the maximum pulse energy of 1.9 mJ was achieved at the repetition rate of 4 kHz. Output average power of the amplified signal was 7.6W with the amplified gain of more than 20dB. This amplifier is suitable for coherent Doppler LIDAR to enhance the measurable range.

Paper Details

Date Published: 19 November 2012
PDF: 6 pages
Proc. SPIE 8526, Lidar Remote Sensing for Environmental Monitoring XIII, 852604 (19 November 2012); doi: 10.1117/12.976293
Show Author Affiliations
Takeshi Sakimura, Mitsubishi Electric Corp. (Japan)
Yojiro Watanabe, Mitsubishi Electric Corp. (Japan)
Toshiyuki Ando, Mitsubishi Electric Corp. (Japan)
Shumpei Kameyama, Mitsubishi Electric Corp. (Japan)
Kimio Asaka, Mitsubishi Electric Corp. (Japan)
Hisamichi Tanaka, Mitsubishi Electric Corp. (Japan)
Takayuki Yanagisawa, Mitsubishi Electric Corp. (Japan)
Yoshihito Hirano, Mitsubishi Electric Corp. (Japan)
Hamaki Inokuchi, Japan Aerospace Exploration Agency (Japan)

Published in SPIE Proceedings Vol. 8526:
Lidar Remote Sensing for Environmental Monitoring XIII
Kazuhiro Asai; Nobuo Sugimoto; Upendra N. Singh; Achuthan Jayaraman; Jianping Huang; Detlef Mueller, Editor(s)

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