Neodymium Laser Glass Improvement Program
Final rept. 1 May 1962-1 Mar 1971
AMERICAN OPTICAL CORP SOUTHBRIDGE MA RESEARCH DIV
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The report describes work carried out over a nine-year period to improve the properties and performance of Nd-laser glass. One of the first tasks was the reduction of absorption at 1.06 micrometers to a 0.1-0.2cm level by the identification and elimination of such impurities as iron. Fluorescent lifetime was investigated. The degree of discoloration due to solarization by the pump source and its effect on laser performance was investigated. Theory was evolved for the design of an athermal laser material based on the hypothesis that thermally induced optical distortion resulting from thermal expansion and associated stress-optical effects can be counterbalanced by direct thermally induced index changes if proper glass composition and cavity design are chosen. Descriptions are given of the measuring techniques for determining coefficients of the above temperature and pressure effects as a function of glass composition.
- Lasers and Masers