Revisiting Raman lidar: application of new techniques to improve system performance

Carl G. Chen; Arthur J. Sedlacek III

doi:10.1117/12.258154

12 November 1996 Revisiting Raman lidar: application of new techniques to improve system performance

Proceedings Volume 2833, Application of Lidar to Current Atmospheric Topics; (1996) https://doi.org/10.1117/12.258154
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

BNL has been developing a remote sensing technique for the detection of atmospheric pollutants using resonance Raman LIDAR that has also incorporated a number of new techniques/technologies designed to extend it performance envelope. Chief among these new techniques is the use of pattern recognition to take advantage of the spectral fingerprint and a new laser frequency modulation technique, referred to as Frequency Modulated Excitation Raman Spectroscopy, designed to suppress broadband fluorescence. In the laboratory, broadband fluorescence suppression approaching 3 orders-of-magnitude has been achieved. In addition, the application of a BNL designed knife-edge Rayleigh filter has also bee demonstrated using our LIDAR system where spectral features as close as 200 cm^-1 from the excitation line were observed. How all these features help increase the overall performance of Raman LIDAR will be discussed.

Citation Download Citation

Carl G. Chen and Arthur J. Sedlacek III "Revisiting Raman lidar: application of new techniques to improve system performance", Proc. SPIE 2833, Application of Lidar to Current Atmospheric Topics, (12 November 1996); https://doi.org/10.1117/12.258154

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