Accession Number : AD0718980

Title :   Czochralski Grown Laser Materials.

Descriptive Note : Final rept. 15 Jan-15 Oct 70,

Corporate Author : RAYTHEON CO WALTHAM MASS RESEARCH DIV

Personal Author(s) : Weber,Marvin J. ; Bass,Michael ; Monchamp,Roch R. ; Comperchio,E.

Report Date : DEC 1970

Pagination or Media Count : 114

Abstract : Yttrium orthoaluminate is investigated for use as an optically-pumped laser host material. The material was grown using the Czochralski method; growth characteristics and parameters are described. A survey and measurements of various crystallographic, mechanical, thermal, and optical properties of YA1O3 crystals are presented. Laser ion systems studied included Nd3+, Nd3+ sensitized by Cr3+, and Ho3+ sensitized by Er3+, and Tm3+. Measurements were made of absorption, fluorescence, and excitation spectra, absorption and emission cross sections, excited-state lifetimes, and energy transfer processes. Laser performance data are presented for pulsed, Q-switched, and CW operation of Nd3+:YA1O3 at 1.06 - 1.08 micrometers and pulsed operation of Ho3+:YA1O3 at 2.12 micrometers. (Author)

Descriptors :   (*ALUMINATES, *CRYSTAL GROWTH), (*LASERS, OPTICAL GLASS), CRYSTALS, YTTRIUM COMPOUNDS, ALUMINATES, OPTICAL PUMPING, X RAY DIFFRACTION, PHYSICAL PROPERTIES, MECHANICAL PROPERTIES, OPTICAL PROPERTIES, FLUORESCENCE, ATOMIC SPECTROSCOPY, INFRARED LASERS, THERMAL PROPERTIES

Subject Categories : Lasers and Masers
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE