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Title: On some unusual coherence effects of maser radiation
Author: Magyar, George
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1964
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First a brief survey of the fields of two—beam inter—ferometry and of optical masers (especially ruby lasers and non—linear laser effects) is given. Then an original experiment is described for the study of transient interference fringes produced by two independent ruby lasers. The apparatus is a simple interferometer, reminiscent of that used for the Young double slit experiment° The fringes are recorded with the help of an electronically gated image converter, which is triggered when "spikes" in the two laser beams appear in coincidence. The image is photographed and then examined with a microdensitometer. The presence of fringes confirms a prediction about transient interference effects for degenerate light, which are unobservable with ordinary thermal light. Finally some preliminary experiments are described for producing and detecting second harmonic generated light in potassium dihydrogen phosphate crystals using rotating prism Q—switched laser,with the object of comparing the spatial coherence of the fundamental and the SHG beams.
Supervisor: Mandel, L. Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available