Comparison of stimulated and spontaneous laser-radar methods for the remote sensing of ocean physical properties

Donald A. Leonard; Harold E. Sweeney

doi:10.1117/12.21471

1 September 1990 Comparison of stimulated and spontaneous laser-radar methods for the remote sensing of ocean physical properties

Donald A. Leonard, Harold E. Sweeney

Author Affiliations +

Proceedings Volume 1302, Ocean Optics X; (1990) https://doi.org/10.1117/12.21471
Event: 1990 Technical Symposium on Optics, Electro-Optics, and Sensors, 1990, Orlando, FL, United States

Abstract

The physical properties of ocean water, in the top few ten meters, are of great interest in the scientific, engineering, and general oceanographic communities. Subsurface profiles of temperature, salinity, and sound speed measured by laser radar in real time on a synoptic basis over a wide area from an airborne platform would provide valuable information complementary to the data that is now readily available. The laser-radar technique specifically applicable to ocean sensing uses spectroscopic analysis of the inelastic backscattered optical signal. Two methods have received considerable attention for remote sensing and both have been demonstrated in field experiments. These are spontaneous Raman1 and spontaneous Brillouin2 scattering. A discussion of these two processes and a comparison of their properties that are useful for remote sensing was presented3 at SPIE Ocean Optics IX. This paper compares ocean remote sensing using stimulated Brillouin scattering (SBS) and stimulated Raman scattering (SRS) processes with better known spontaneous methods. The results of laboratory measurements of temperature using SBS and some preliminary results of SRS are presented with extensions to performance estimates of potential field systems.

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Donald A. Leonard and Harold E. Sweeney "Comparison of stimulated and spontaneous laser-radar methods for the remote sensing of ocean physical properties", Proc. SPIE 1302, Ocean Optics X, (1 September 1990); https://doi.org/10.1117/12.21471

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