Optimization of a Raman shifted dye laser system for DIAL applications
- University of Maryland, Institute for Physical Science Technology, College Park, Maryland 20742-2431 (USA)
We describe an efficient Raman shifted dye laser system that generates tunable radiation at 765 and 940 nm with a bandwidth of 0.03 cm{sup {minus}1}. Operating a Raman cell at hydrogen pressure below 14 atm, we recorded optimum first Stokes energy conversions of 45% and of 37% at 765 and 940 nm, respectively. Optical depth measurements made at the centers of twenty-five absorption lines in the {ital P} branch of the oxygen {ital A} band imply a high spectral purity for both the laser and the Raman shifted radiation, and thus indicate the feasibility of using the stimulated Raman scattered radiation for differential absorption lidar (DIAL) measurements.
- OSTI ID:
- 6970804
- Journal Information:
- Applied Optics; (USA), Journal Name: Applied Optics; (USA) Vol. 29:12; ISSN 0003-6935; ISSN APOPA
- Country of Publication:
- United States
- Language:
- English
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