Real-time polarization laser radar

Sergey N. Savenkov; Borys M. Kolisnychenko; Valeri V. Marienko

doi:10.1117/12.230407

19 January 1996 Real-time polarization laser radar

Sergey N. Savenkov, Borys M. Kolisnychenko, Valeri V. Marienko

Proceedings Volume 2599, Three-Dimensional and Unconventional Imaging for Industrial Inspection and Metrology; (1996) https://doi.org/10.1117/12.230407
Event: Photonics East '95, 1995, Philadelphia, PA, United States

Abstract

Various kinds of laser radar systems have become widespread. But most of these systems are the systems with amplitude processing of information. The polarization processing of information is used considerably rarely. As a rule these systems are based on measurement of Stokes vector. Practically, there are not systems based on the measurement of Mueller matrix. Although it is known that the last one contained the maximum of information on physical properties of objects. The mostly full absence of processing methods of information contained in Mueller matrix makes such order of matter. The original method of Mueller matrix analysis and a laser radar system based on it are presented in the paper. The system created has got an accuracy of 0.05% for single measurements. It is reached due to use of a control electro- optical polarization converter in the probing and receiving channels of the system. This makes it possible to fully automate processes of measurement and calibration of the system. It also makes available operational elasticity of the system: choice of measurement parameters (whole Stokes vector, Mueller matrix or particularly some of their elements) only by software means. Measurement time reached a few microseconds. The exception of influence of the optical radiation background component on the measurement result without use of an interference filter is a distinction of this system. It considerably increases the level of interference suppression. It is possible due to the intensity modulation of optical radiation in the system probing channel with simultaneous modulation of polarization. Another distinction of this system is the concept of processing of received information. On the base of this concept the following statement is laid: an arbitrary Mueller matrix always may be presented on the basis of amplitude and phase anisotropy matrices. There are some very important consequences of this statement. Namely, it allows us to characterize suitably the physical behavior of the object with respect to polarization phenomena and to perform a general classification of objects based on the above mentioned approach. Furthermore it is possible on this base to synthesize the polarization systems with given characteristics.

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Sergey N. Savenkov, Borys M. Kolisnychenko, and Valeri V. Marienko "Real-time polarization laser radar", Proc. SPIE 2599, Three-Dimensional and Unconventional Imaging for Industrial Inspection and Metrology, (19 January 1996); https://doi.org/10.1117/12.230407

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KEYWORDS

Polarization

Anisotropy

Modulation

Wave plates

Chemical elements

Data processing

LIDAR

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