Optical Pumps for Lasers.

Abstract

The objective of this program was to increase the efficiency and reproducibility of optical pumps for Nd:YAG lasers both when new and after 1 million or 10 million pulses. Efficiency was increased by using smaller bore diameters (to 2.5 mm), higher pressures, krypton gas at 10 J, pulse lengths near 100 microsec, cerium-doped quartz envelopes, and a simmer current. Operation with a simmer current increased useful light output by 25% and reduced pulse-to-pulse varibaility from 0.43% to 0.12%. Lamp life, reproducibility, and efficiency were studied as functions of: precision control of bore diameter, the use of a simmer discharge, the use of cerium-doped quartz envelopes, the employment of fluorescent dye solutions, color center formation, and cooling techniques. (Modified author abstract)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1973
Accession Number
AD0775400

Entities

People

  • Lowell Noble

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Color Centers
  • Diameters
  • Dyes
  • Efficiency
  • Employment
  • Fluorescent Dyes
  • Lasers
  • Precision
  • Reproducibility
  • Yag Lasers

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Electrical Engineering
  • Nuclear and Radiation Engineering.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers