Accession Number:

ADA279331

Title:

Performance of a Diode-Pumped Laser Repetitively Q-Switched with a Mechanical Shutter

Descriptive Note:

Professional paper

Corporate Author:

NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA

Personal Author(s):

Report Date:

1994-02-20

Pagination or Media Count:

12.0

Abstract:

This paper describes the repetitively Q-switched operation of an end- pumped NdYAG laser over the range of 200 H 2 to 3 kHz using an intracavity chopper. Performance is shown to be comparable to that achieved with an acousto- optic Q switch under similar conditions. The advantages and limitations of the mechanical Q switch are described. Parametric variations of output coupling and pump power lead to an extended empirical description of repetitively Q-switched laser operation. The insertion loss as a function of aperture-edge penetration into the resonator is reported, and a definition of the mechanical Q-switch opening time is provided. Q-switched pulsewidths as short as 35 ns were obtained for the NdYAG laser, with a peak power-enhancement factor in excess of 300. Lasers, Underwater communications, Fraunhofer line.

Subject Categories:

  • Lasers and Masers
  • Acoustooptic and Optoacoustic Devices
  • Electricity and Magnetism
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE