Mini-Raman lidar system for stand-off in-situ interrogation of surface contaminants

Mark D. Ray; Arthur J. Sedlacek III

doi:10.1117/12.366437

22 October 1999 Mini-Raman lidar system for stand-off in-situ interrogation of surface contaminants

Mark D. Ray, Arthur J. Sedlacek III

Proceedings Volume 3757, Application of Lidar to Current Atmospheric Topics III; (1999) https://doi.org/10.1117/12.366437
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

The Mini-Raman Lidar System (MRLS) is a `proof-of-principle' chemical sensor that combines the spectral fingerprinting of solar-blind UV Raman spectroscopy with the principles of lidar to open a new venue of short-range (meters to tens of meters), non-contact detection and identification of unknown substances on surfaces. The device has potential application to `first responders' at the site of a chemical spill. The MRLS is portable and has been used both in the lab and in the field. Theoretical estimates and actual laboratory data suggest the possibility of detecting contaminants with a surface coverage of < 1 g/m² at a distance of three meters for one second of signal integration. Increasing the optical throughput efficiency, integrating pattern recognition software, and incorporating a laser with a wavelength near 250 nm are the primary goals for the development of a prototype system.

Citation Download Citation

Mark D. Ray and Arthur J. Sedlacek III "Mini-Raman lidar system for stand-off in-situ interrogation of surface contaminants", Proc. SPIE 3757, Application of Lidar to Current Atmospheric Topics III, (22 October 1999); https://doi.org/10.1117/12.366437

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