Space Laser Design.
Abstract
Conductive cooling of a Nd:YAG laser crystal is realized by cradling the silvercoated rod in a copper heat sink. Pump radiation illuminates the rod from the side through a window in the solid housing; and as a result, the entering pump radiation is efficiently trapped in the weakly absorbing laser crystal. Two cavities, both employing 'cold' mirrors to filter the pump radiation, were designed to pump the narrow side aperture. A non-imaging design, employing flat dielectric mirrors, proved less efficient than a hybrid imaging design which employed a combination of elliptical and circular cylindrical dielectric mirrors to efficiently pump the conductively cooled laser. The latter cavity delivered 1.5 W of multimode laser power when pumped with 300 W from a K-Rb lamp. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1972
- Accession Number
- AD0907100
Entities
People
- James T. Flynn
- Robert J. Mongeon
Organizations
- United Technologies Corporation