Accession Number : AD0902614

Title :   Three to 5-Micron Parametric Oscillator.

Descriptive Note : Final rept.,

Corporate Author : GTE SYLVANIA INC MOUNTAIN VIEW CA ELECTRO-OPTICS ORGANIZATION

Personal Author(s) : Ammann, Eugene O.

Report Date : MAY 1972

Pagination or Media Count : 87

Abstract : This report summarizes the results of a twelve month program whose goal is the generation of infrared outputs in the 3-to-5-micron region. This program is a continuation of work started under contract F33615-69-C-1702. On the present program, internal optical parametric oscillators have been operated which have produced average powers of 1.8 watts at 2.1 microns and 200 mW at 3.1 microns. Tunable outputs greater than 500 mW were obtained from 1.8 to 2.7 microns, and outputs greater than 50 mW were obtained from 2.8 to 3.7 microns. Peak powers were 3200 times average power. The parametric oscillator consists of a lithium niobate crystal having mirrors coated on its end faces which is placed inside a continuously pumped repetitively Q-switched Nd:YA10 sub 3 laser. In addition to various oscillator experiments, studies have been carried out on (1) Nd:YA10 sub 3 versus Nd:YAG as the oscillator pump; (2) mode control of the pump laser; (3) the feasibility of using lithium iodate instead of lithium niobate as the nonlinear material; (4) the occurrence of simultaneous parameteric oscillation and sum-frequency generation; and (5) laser damage to lithium niobate and its coatings. (Author)

Descriptors :   (*OSCILLATORS, INFRARED RADIATION), (*LASERS, OSCILLATORS), INFRARED LASERS, LITHIUM, CRYSTALS, NIOBATES, MIRRORS, POWER, NEODYMIUM, ALUMINUM, RODS, OPTICS, TUNGSTEN, SUBSTRATES, ELECTROOPTICS, OXIDES, COATINGS.

Subject Categories : Lasers and Masers
      Electrooptical and Optoelectronic Devices
      Acoustooptic and Optoacoustic Devices
      Infrared Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE