Accession Number : AD0707424

Title :   PARAMETRIC OSCILLATOR RESEARCH.

Descriptive Note : Annual rept. 15 May 69-15 May 70,

Corporate Author : SYLVANIA ELECTRONIC SYSTEMS-WEST MOUNTAIN VIEW CALIF ELECTRO-OPTICS ORGANIZATION

Personal Author(s) : Ammann,E. O. ; Massey,G. A. ; Yarborough,J. M.

Report Date : 15 MAY 1970

Pagination or Media Count : 44

Abstract : The objective of the research was to investigate techniques for extending the tuning range of optical parametric oscillators further into (a) the infrared and (b) the visible and ultraviolet. Two separate tasks are discussed. The first is an experimental and theoretical study of a proustite oscillator which is pumped by the 1.06 micron output of a Nd:YAG laser, and the second a study of an ammonium dihydrogen phosphate (ADP) oscillator which is pumped by the frequency-quadrupled output from a Nd:YAG laser. The report summarizes the results of work on these tasks. A proustite optical parametric oscillator has been designed, built, and successfully operated. The oscillator operates near degeneracy with signal and idler outputs near 2.13 microns. Also completed was the design of an oscillator which is pumped by the fourth harmonic of the 1.06 micron output from a Nd:YAG laser. ADP has been selected as the nonlinear material, and an optimum crystal orientation established. Calculations have been carried out on temperature-tuning of the oscillator, and of the pump power required to reach threshold. A unique oscillator resonator design has been devised which will eliminate the need for coatings which can withstand the substantial ultraviolet pump power densities involved. (Author)

Descriptors :   (*LASERS, *OSCILLATORS), CRYSTAL OSCILLATORS, TUNING DEVICES, SURFACE PROPERTIES, CRYSTAL DEFECTS, SILVER COMPOUNDS, ARSENIC COMPOUNDS, PHOSPHATES, SULFIDES, AMMONIUM COMPOUNDS

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE