Coupled high-power waveguide laser research. Final report, 1 July 1986-30 June 1987

Technical Report · Wed Sep 30 04:00:00 EDT 1987

OSTI ID:5215603

Cantor, A J; Hart, R A; Kennedy, J T; Newman, L A

The experimental and theoretical progress made in the coupled high-power waveguide laser research program is reported. A problem was 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, was 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 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.

• Research Organization: United Technologies Research Center, East Hartford, CT (USA)
• OSTI ID: 5215603
• Report Number(s): AD-A-189800/6/XAB; UTRC/R-87-927184
• Country of Publication: United States
• Language: English

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AMPLIFICATION
CARBON DIOXIDE LASERS
DOCUMENT TYPES
GAIN
GAS LASERS
GEOMETRY
LASERS
MATHEMATICS
PROGRESS REPORT
RESEARCH PROGRAMS
VOLUME
WAVEGUIDES