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Eye-safe compact Raman light detection and ranging temperature profiler

Document ID: 209

Li, Guangkun^1,5
Schwemmer, Geary^1,2
Prasad, Coorg²
Hwang, I. H.²
Lei, Jie²
Lee, Sangwoo²
Prasad, Narasimha S.³
Philbrick, C. Russell⁴

¹ MassTech Inc., Columbia, MD, U.S.A.
² Science and Engineering Services, Inc., Columbia, MD, U.S.A.
³ NASA Langley Research Center, Hampton, VA, U.S.A.
⁴ North Carolina State University, Department of Marine, Earth and Atmospheric Sciences, Raleigh, NC, U.S.A.
⁵ Automated Precision, Inc., Rockville, MD, U.S.A.
 

Abstract

The vertical profile of atmospheric temperature is a principal state variable to study atmospheric stability. A lidar system, constructed using a 355 nm Nd:YAG laser transmitter, measures the temperature profile using the rotational Raman technique. In comparison with traditional Raman lidar, the major innovations are the use of a low peak power and high repetition rate laser to achieve eye-safe operation in a compact reliable instrument and the use of an angle tuning filter to select operating wavelengths. We demonstrate the capability of both nighttime and daytime measurements as a step toward a future stand-alone capability for routine measurements of important meteorological properties in the lower atmosphere.

 

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Citation:

"Eye-safe compact Raman light detection and ranging temperature profiler", Li, G., G. Schwemmer, C. Prasad, I. H. Hwang, J. Lei, S. Lee, N. S. Prasad, C. R. Philbrick, Applied Optics, Vol. 52, No. 35, Optical Society of America (OSA), Washington, D.C., United States, 2013, pp. 8540 - 8548, CCC: 1559-128X/13/358540-09, OCIS: (010.0280); (010.3640)