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
      OPTICS


Distribution Statement : APPROVED FOR PUBLIC RELEASE