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An OPO-Based Lidar System for Differential Absorption Measurements of Methane in the 3 micron region

Authors :
Lee, S. W
Zenker, T
Chyba, T. H
Source :
Nineteenth International Laser Radar Conference. (Part 2)
Publication Year :
1998
Publisher :
United States: NASA Center for Aerospace Information (CASI), 1998.

Abstract

A ground-based lidar system in the wavelength region of 1.45-4 microns for the remote measurement of methane is described. The laser transmitter consists of an injection-seeded Nd:YAG laser which pumps an OPO (optical parametric oscillator). The OPO output is tunable from 1.45-4 microns, with a bandwidth less than 500 MHz, and a pulse energy of 1 to 3 mJ at 3.29 microns. The receiver is cart-mounted and consists of a 14" telescope with 1.57 and 3.29 micron detector channels. A fast oscilloscope is used for data acquisition. The system performance will be tested through measurements of sources of atmospheric methane.

Subjects

Subjects :
Instrumentation And Photography

Details

Language :
English
Issue :
Part 2
Database :
NASA Technical Reports
Journal :
Nineteenth International Laser Radar Conference
Notes :
NCC1-214, , NAGw-2929
Publication Type :
Report
Accession number :
edsnas.19980236796
Document Type :
Report