Frequency tunable Ti:sapphire laser system for UV lidar
- Kyung Hee Univ., Yongin (Korea, Republic of)
The DIAL (Differential Absorption Lidar) system for air pollutant monitoring requires some tens of energy, hundreds of variable region of wavelength, and narrow spectral linewidth below 0.1 cm{sup {minus}1}. Here, multipass Ti:sapphire amplifier for the light source of DIAL was developed in an angular-multiplexing, and the characteristics of output energy and spectrum was investigated. In the two-stage multipass amplifier, the authors obtained the maximum output energy of 42 mJ, the amplification gain of 21 dB and the output efficiency of 26% on the wavelength of 790 nm. In the tuning range of 715--930 nm the spectral linewidth is 0.05 cm{sup {minus}1}. The conversion efficiencies of 35% for SHG at 780 nm and 13% for THG at 390 nm are obtained respectively. The continuous tunabilities of 240--306 nm in UV region and 360--460 nm in deep-blue region could be achieved.
- OSTI ID:
- 529663
- Report Number(s):
- CONF-9611124--; ISBN 0-8194-2290-8
- Country of Publication:
- United States
- Language:
- English
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