Accession Number : AD0682464

Title :   OPTICAL QUANTUM GENERATORS AND PROSPECTS FOR THEIR APPLICATION IN OPTICAL RANGEFINDERS,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Nazarov,V. M.

Report Date : 12 JUN 1968

Pagination or Media Count : 28

Abstract : The major portion of the article is devoted to a review of the historical development, theory, and physical characteristics of solid, gas, and semiconductor lasers. The remainder is a discussion of their possible application in optical range finders. Basic requirements for lasers in optical range finders are listed. Lasers operating in the pulsed mode are not suitable at present, because short pulses with well-defined shape can not be produced with sufficient accuracy for time-of-flight measurements of distance. In general, solid and semiconductor lasers operating in the continuous mode are not suitable because of power and/or cooling requirements. Gas lasers operating in the infrared are also not suitable because of the high atmosphere absorption at these wavelengths. However, helium-neon lasers operating at 632.8 nanometers have been successfully applied in optical range finders for measuring distances up to 20-30 km. A description of these experiments is presented. A recombination gallium arsenide photodiode operating at about 0.9 micrometers has been applied in the topographic range finder GD-314, which measures distances up to 2 km. (Author)

Descriptors :   (*LASERS, *RANGE FINDING), GAS LASERS, HELIUM, NEON, GALLIUM ARSENIDES, PHOTODIODES, USSR

Subject Categories : Lasers and Masers
      Optical Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE