Accession Number : ADD000432

Title :   Apparatus for Laser Frequency Selection.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Currie,George D

Report Date : 11 Feb 1975

Pagination or Media Count : 5

Abstract : The patent describes a way of using the sharply selective transmitting properties of an aligned etalon. This is accomplished by providing two quarter wave plates and where needed, a linear polarizer in the laser cavity. In lasers, such as Brewster window terminated gas discharge tubes, which provide a polarized beam, the separate polarizer is not needed. A piezoelectric transducer is provided to change the interferometer length to make the laser frequency selective.

Descriptors :   *Patents, *Tunable lasers, *Tuning devices, Laser beams, Mirrors, Laser cavities, Piezoelectric transducers, Interferometers

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE