LASER DEVICES EXPLORATORY INVESTIGATION.
Abstract
Progress was made in simplifying the theory of optical resonators so that cavities of any complexity, eventually including the pinhole mode selector, can be conveniently analyzed. The simplified analysis also lends itself to optimization of resonator design. The time dependence of the laser frequency spectrum was studied experimentally with a Fabry-Perot interferometer coupled to a rotating-drum streak camera, with emphasis on the influence of pumping rate on mode hopping. Work on cw operation of ruby was concentrated on cooling techniques. Chromium-doped synthetic spinel exhibits broad fluorescence line width, probably because of disorder in the structure, with chromium ions occupying neighboring sites in both tetrahedral and octahedral coordination. The chromium site occupancy may be controllable by using mixed zinc-magnesium spinel hosts. Other possible laser materials were prepared and studied spectroscopically, including terbium-doped LaAlO3. The output in the ultraviolet of several kinds of flash lamps was studied in connection with work on laser crystals requiring ultraviolet pumping. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 1963
- Accession Number
- AD0423698
Entities
Organizations
- HRL Laboratories