Accession Number : AD0877165

Title :   Solid State Infrared Laser Devices.

Descriptive Note : Interim technical rept. no. 1, 4 Mar 69-30 Jun 70,

Corporate Author : HUGHES RESEARCH LABS MALIBU CA

Personal Author(s) : Evtuhov, Viktor ; Devor, Donald P. ; Soffer, Bernard H. ; Robinson, Morton

Report Date : NOV 1970

Pagination or Media Count : 105

Abstract : The objectives of the research are to carry out investigations of laser materials and devices operating in the spectral region between 2.0 and 2.4 micro m with the goal of obtaining efficient, high power continuous and repetitively Q-switched laser operation. The report describes the study of the applicability to 2.1 micro m laser devices of calcium erbium fluoride host (Ca2Er5F19) with Ho(3+) as an active ion and sensitized with Tm(3+). The program also included the growth and material properties studies of this crystal. Successful continuous and repetitively Q-switched laser operation satisfying some of the contract objectives has been obtained using this laser material. During the investigation certain problems associated with the above laser material have been uncovered and traced to some fundamental material properties, having to do with the apparent 'defect structure' of Ca2Er5F19.

Descriptors :   *RARE EARTH ELEMENTS), *FLUORESCENCE), (*LASERS, (*HOLMIUM, FLUORIDES, CRYSTAL LATTICES, CRYSTAL GROWTH, ERBIUM COMPOUNDS, CALCIUM COMPOUNDS, INFRARED RADIATION, THULIUM, INFRARED SPECTRA, RELAXATION TIME, POWER.

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE