Accession Number:

AD0679713

Title:

MEASURING THE POWER CHARACTERISTICS OF A LASER AMPLIFIER,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Report Date:

1968-01-04

Pagination or Media Count:

7.0

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 microwattsj. 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

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE