Investigations of self-pumped phase conjugate laser beams and coherence length.
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Authors
Sutton, George M.
Subjects
Coherence Length
Photorefractive Effect
Barium Titanate
Self-Pumped Phase Conjugation
Photorefractive Effect
Barium Titanate
Self-Pumped Phase Conjugation
Advisors
Biblarz, Oscar
Date of Issue
1993-03
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The phase conjugation process by a nonlinear, photorefractive crystal is not
completely ideal and losses should be expected to occur after a beam is
conjugated. This thesis research investigates possible changes in coherence length
as a result of internal losses in barium titanate (BaTi03 ). Additionally, laser
reflections from a corner cube reflector is also examined for changes in coherence
length. Experimental findings are inconclusive because the conventional
spectrometer used to measure coherence length did not possess the required
resolution. It is recommended that an interferometer which can resolve the laser
line width be utilized for future coherence length measurements, together with
a means of blocking the conjugated beam from entering the laser cavity and
destabilizing the oscillations within.
Type
Thesis
Description
Series/Report No
Department
Physics
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
47 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.