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Proceedings Paper

Three-year program to improve critical 1-micron Qsw laser technology for Earth observation
Author(s): Daisuke Sakaizawa; Yoshikazu Chishiki; Yohei Satoh; Tatsuyuki Hanada; Shiro Yamakawa; Takayo Ogawa; Satoshi Wada; Shoken Ishii; Kohei Mizutani; Motoaki Yasui
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Paper Abstract

Laser remote sensing technologies are valuable for a variety of scientific requirements. These measurement techniques are involved in several earth science areas, including atmospheric chemistry, aerosols and clouds, wind speed and directions, prediction of pollution, oceanic mixed layer depth, vegetation canopy height (biomass), ice sheet, surface topography, and others. Much of these measurements have been performed from the ground to aircraft over the past decades. To improve knowledge of these science areas with transport models (e.g. AGCM), further advances of vertical profile are required. JAXA collaborated with NICT and RIKEN started a new cross-sectional 3-year program to improve a technology readiness of the critical 1-micron wavelengths from 2011. The efficient frequency conversions such as second and third harmonic generation and optical parametric oscillation/generation are applied. A variety of elements are common issues to lidar instruments, which includes heat rejection using high thermal conductivity materials, laser diode life time and reliability, wavelength control, and suppression of contamination control. And the program has invested in several critical areas including advanced laser transmitter technologies to enable science measurements and improvement of knowledge for space-based laser diode arrays, Pockels cells, advanced nonlinear wavelength conversion technology for space-based LIDIRs. Final goal is aim to realize 15 watt class Q-switched pulse laser over 3-year lifetime.

Paper Details

Date Published: 19 November 2012
PDF: 5 pages
Proc. SPIE 8526, Lidar Remote Sensing for Environmental Monitoring XIII, 85260V (19 November 2012); doi: 10.1117/12.979665
Show Author Affiliations
Daisuke Sakaizawa, Japan Aerospace Exploration Agency (Japan)
Yoshikazu Chishiki, Japan Aerospace Exploration Agency (Japan)
Yohei Satoh, Japan Aerospace Exploration Agency (Japan)
Tatsuyuki Hanada, Japan Aerospace Exploration Agency (Japan)
Shiro Yamakawa, Japan Aerospace Exploration Agency (Japan)
Takayo Ogawa, RIKEN (Japan)
Satoshi Wada, RIKEN (Japan)
Shoken Ishii, National Institute of Information and Communications Technology (Japan)
Kohei Mizutani, National Institute of Information and Communications Technology (Japan)
Motoaki Yasui, National Institute of Information and Communications Technology (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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