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Proceedings Paper

Some new possibilities to design frequency-tunable lidars in the IR (2-14 um)
Author(s): Gennady I. Freidman; Guerman A. Pasmanik; Alexander A. Shilov; Darrel G. Peterson
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Paper Abstract

Detection of different chemical species in the atmosphere is performed with a frequency- tunable middle IR laser. The design of lidar for this range is discussed. Two pulses can be used, one propagates to an object another provides receiving a reflected signal. When emitting, it is possible to start with YAG:Nd repetitively-pulsed solid-state laser radiation of 1.06 micrometers , 1 - 8 J, 10 - 100 Hz. The first pulse is further converted by OPO in 1.5 - 2.1 micrometers range and then into 4 - 14 micrometers radiation with SRS in hydrogen or other gases. To receive a weak reflected signal of 4 - 14 micrometers we propose using a hydrogen or other Raman amplifier which is pumped with the second OPO pulse (two pulses spaced by 2L/c, L being the distance from an object). A sensitivity for the method better than 10 photon per mode is achieved. For a wavelength less 4 micrometers it is possible to use only one OPO (for example by LiNbO3) as an emitter and receiver.

Paper Details

Date Published: 10 February 1995
PDF: 5 pages
Proc. SPIE 2366, Optical Instrumentation for Gas Emissions Monitoring and Atmospheric Measurements, (10 February 1995); doi: 10.1117/12.205585
Show Author Affiliations
Gennady I. Freidman, Passat Enterprise (Russia)
Guerman A. Pasmanik, Passat Enterprise (Russia)
Alexander A. Shilov, Passat Enterprise (Russia)
Darrel G. Peterson, Idaho National Engineering Lab. (United States)

Published in SPIE Proceedings Vol. 2366:
Optical Instrumentation for Gas Emissions Monitoring and Atmospheric Measurements
Michael G. Yost; Dennis K. Killinger; Joseph Leonelli; William Vaughan; Dennis K. Killinger; William Vaughan; Michael G. Yost, Editor(s)

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