Accession Number : ADA189800

Title :   Coupled High Power Waveguide Laser Research.

Descriptive Note : Final rept. 1 Jul 86-30 Jun 87,

Corporate Author : UNITED TECHNOLOGIES RESEARCH CENTER EAST HARTFORD CT

Personal Author(s) : Cantor, A J ; Hart, R A ; Kennedy, J T ; Newman, L A

PDF Url : ADA189800

Report Date : 30 Sep 1987

Pagination or Media Count : 48

Abstract : The experimental and theoretical progress that has been made in the coupled high power waveguide laser research program is reported. A problem has been encountered with the hollow-bore ridge waveguide laser array approach in which multimode operation occurs when the array is increased to above three elements. Alternative waveguide geometries were explored with the objective of achieving both phase locked operation and mode discrimination for an array size of 5 elements. Three new waveguide geometries were investigated. Of these new geometries, a modified hollow-bore ridge waveguide, utilizing a staggered ridge, has been used successfully to obtain single mode operation. This array, with a gain volume equivalent to six waveguide lasers, produced an output of 68 watts. The theoretical effort has resulted in the development of a theoretical method for calculating the modes and frequencies of two coupled rectangular waveguides separated by an infinitely thin partition with a gap in it.

Descriptors :   *WAVEGUIDES, *OPTICAL WAVEGUIDES, *CARBON DIOXIDE LASERS, ARRAYS, BORES, DISCRIMINATION, GAIN, LASERS, MULTIMODE, PHASE LOCKED SYSTEMS, RECTANGULAR BODIES, RIDGES, SIZES(DIMENSIONS), THINNESS, VOLUME, WAVEGUIDE COUPLERS, HIGH POWER, ARRAYS

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE