Chromium Sensitized Garnets for Mid-IR Lasers

Abstract

The characteristics of chromium-sensitized solid state lasers operating in the mid-infrared wavelength region have been studied. During the second year of research there was continued work on crystals doped with holmium and erbium, operating in the 2100-nm and 2800-nm regions. In addition, preliminary measurements were made on the laser performance of thulium around 2010 nm. For all these materials the effect of pump pulse length on output energy and overall efficiency has been measured. A flashlamp-pumped Cr,Nd:GSGG slab laser was operated and characterized at 1061 and 1310 nm. Measurements included comparison of normal mode slope efficiencies, input-output vs. pump pulse length, characterization of thermal lensing and measurement of Q-switched performance at 1061 nm. Spectroscopic properties of GGG crystals doped with Ce4+ ions were measured, including absorption and emission spectra and fluorescence lifetime. Keywords: Chromium sensitized solid state lasers, Mid infrared wavelength region.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jan 29, 1990
Accession Number
ADA226630

Entities

People

  • Peter F. Moulton

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Chromium
  • Diffraction
  • Efficiency
  • Electro-Optics
  • Emission
  • Emission Spectra
  • Energy Transfer
  • Laser Beams
  • Lasers
  • Materials
  • Measurement
  • Optical Properties
  • Optics
  • Solid State Lasers
  • Spectra
  • Yag Lasers

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers