MEASURING THE POWER CHARACTERISTICS OF A LASER AMPLIFIER,
Abstract
The master laser consisted of a ruby rod 120 mm long and 6.5 mm in diameter pumped by a 500-j flashlamp. The laser output was Q-switched by a rotating (20,000 rpm) prism and consisted of 0.2-j 50-nanosec pulses. The laser amplifier used ruby rods 120 and 240 mm long. The beam energy was measured by means of a calorimeter with a sensitivity of 300 microwatts/j. The gain of a 24-cm laser amplifier was shown to decrease with increasing output energy. To eliminate interference by regeneration, the rod ends were set at angles of 15-20 min. with the mirror. The maximum gain was observed at indication angles of about 5 min. Further increase to about 15 min. resulted in the traveling-wave operation. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 04, 1968
- Accession Number
- AD0679713
Entities
People
- A. L. Mikaelyan
- P. S. Pogosyan
- Yu. G. Turkov
Organizations
- National Air and Space Intelligence Center