Accession Number : ADA189558

Title :   Resonator Coupling of Two Ring Cavity, Argon-Ion Lasers.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Abraham, Warren O

PDF Url : ADA189558

Report Date : Dec 1987

Pagination or Media Count : 57

Abstract : This thesis reports on a study of phasing two continuous-wave, resonator-coupled, argon-ion ring lasers. Rings with cavity lengths of about 3.4 meters were formed from Spectra Physics Model 164 and 165 lasers. These rings were coupled in several configurations, and portions of each ring output were combined to form a mixed beam, which was monitored for phase locking (frequency locking and coherence) with a Fabry-Perot scanning interferometer and a fast photodiode. Short term phase locking was achieved (2.5 msce) when at least one ring was operated in multimode. Precise frequency tuning of rigs operating in single mode was not possible, therefore phase locking of two single mode rings' lasing thresholds did not affect phase locking, but increasing the coupling strength between the resonators increased the duration of phase locking activity. Suppression of intracavity air turbulence increased the frequency range within which phase locking occurred.

Descriptors :   *ARGON LASERS, *RING LASERS, *CAVITY RESONATORS, CONTINUOUS WAVES, COUPLING(INTERACTION), IONS, LENGTH, MIXING, OUTPUT, PHOTODIODES, PRECISION, RESONATORS, RINGS, SCANNING, STRENGTH(GENERAL), THESES, TUNING, TURBULENCE, FABRY PEROT INTERFEROMETERS, PHASE LOCKED SYSTEMS, LASER CAVITIES

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE