Accession Number : AD0438170


Title :   SOLID STATE LASER EXPLORATIONS.


Descriptive Note : Interim engineering rept. no. 2, 16 Jan 64-15 Apr 64,


Corporate Author : RCA LABS PRINCETON N J


Personal Author(s) : Collard,J ; Kiss,Z J ; Pressley,R J ; Sterzer,F ; Walsh,T


Report Date : 01 May 1964


Pagination or Media Count : 59


Abstract : Attempts to operate a color-center pumped CaF2: ErOF crystal as a laser were unsuccessful. Spectroscopic studies and improvements in crystal growth techniques continued for alkaline earth halide and halofluoride systems. The chemical reduction technique for obtaining divalent dysprosium in CaF2 has been developed to the point where several high-quality laser rods have been produced. Work continues on improving laser efficiencies by improved crystal cooling and pumping methods. The effects of temperature changes on the optical cavity modes have been computed. A double-elliptic reflector laser pumping system with two pump lamps has been built and provides a method of achieving significantly higher excitation levels than previous systems. Measurements of beam power as a function of output coupling have been made. A variable-bandwidth cavity optical modulator was built and its microwave properties determined. A method of producing true rotation of the plane of polarization in a modulator was developed and analyzed. The capacitance variations in photodiodes were studied to determine their usefulness in parametric photodiode detector applications. (Author)


Descriptors :   *LASERS , SCIENTIFIC RESEARCH , SOLID STATE PHYSICS , CALCIUM COMPOUNDS , FLUORIDES , ERBIUM COMPOUNDS , FLUORINE COMPOUNDS , OXYGEN COMPOUNDS , CRYSTALS , SPECTROSCOPY , MATERIALS , PUMPING(ELECTRONICS) , DYSPROSIUM , MAGNETIC FIELDS


Distribution Statement : APPROVED FOR PUBLIC RELEASE