Accession Number : AD0674225

Title :   PRISM SHUTTER WITH PERIODIC OPENINGS (PRYZMOVYI ZATVOR Z PERIODYCHNYM VVIMKNENNYAM),

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Baiborodin,Yu. V. ; Garazha,S. A. ; Kravchenko,V. Y. ; Spizhova,N. I.

Report Date : 21 SEP 1967

Pagination or Media Count : 6

Abstract : A multi-prism Q switch is described, consisting of a rotating prism set on the shaft of an electric motor and a series of 60 totally reflecting prisms set on an annulus. The construction allows precise adjustment of the rotating prism relative to the ruby crystal of the laser and relative to the other prisms. Rotation of the setup results in multiple opening of the shutter which in turn leads to generation of a series of laser pulses. The rate of opening in this system is twice as large as with a single-prism Q switch. The repetition rate of the pulses depends on the rate of revolution of the motor and the number of prisms on the annulus, and the number of generated pulses depends on the length of the illumination of the pump lamp and the frequency of closing the optical resonator. A repetition rate of 20 cps with a length of the illumination pulse of 2 msec resulted in a rate of 4 to 20 pulses, depending on the pump energy. A simple synchronization system of the pump results in giant light pulses with a peak close to 1 MW. (Author)

Descriptors :   (*LASERS, USSR), PRISMS(OPTICS), SHUTTERS(OPTICS), ROTATION, LIGHT PULSES, OPTICAL PUMPING

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE