Holmium - 2 Micrometer Pumped Optical Parametric Oscillator.
Abstract
The program had as its objective the demonstration of a parametric oscillator operating throughout the 4 to 5 micrometer region pumped by a 2.1 micrometer Ho:YAG (holmium-activated, erbium, and thulium sensitized YAG) laser. Proustite was chosen as the most practically suitable nonlinear material for this work. The value of laser pump induced damage threshold allowed pumping somewhat over the calculated oscillator threshold. In the course of the program several difficulties were encountered. They involve the crystal quality, the fabrication of broad band low loss multilayer dielectric coatings, uncertainties in the alignment of resonator and crystal, pump laser damage to proustite and the possibility of self-damage by internal resonant oscillator fields.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1974
- Accession Number
- ADA004213
Entities
People
- A. I. Braunstein
- A. L. Gentile
- C. K. Asawa
- D. P. Devor
- V. Evtuhov
Organizations
- HRL Laboratories