Accession Number : ADA258821
Title : Laser Phase Front Measurements Using a Phase Conjugate Twyman-Green Interferometer
Descriptive Note : Master's thesis
Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING
Personal Author(s) : Mandeville, William J.
Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA258821
Report Date : DEC 1992
Pagination or Media Count : 51
Abstract : This study demonstrated the use of a phase conjugate TwymanGreen interferometer for measuring the phase fronts of beams emitted by infrared diode lasers operating at 830 nm. This interferometer successfully measured the phase front of a single element diode laser, providing better resolution than its conventional counterpart. The phase conjugate mirror compensated for aberrations introduced by imperfect optics in the phase conjugating arm of the interferometer. This interferometer was unable to measure the phase front of a diode array due to the array's inability to create a phase conjugate return. The array's short coherence length is believed to be the main cause preventing the phase conjugate return.
Descriptors : *LASER BEAMS , DIODES , MIRRORS , OPTICS , RESOLUTION , OPTICAL INTERFEROMETERS , BARIUM TITANATES , PHASE , COHERENCE , ARRAYS , THESES
Subject Categories : LASERS AND MASERS
Distribution Statement : APPROVED FOR PUBLIC RELEASE