Cryogenic Yb: YAG Thin-Disk Laser

Abstract

At cryogenic temperatures, Yb:YAG behaves as a 4-level laser. Its absorption and emission cross-sections increase, and its thermal conductivity improves. Yb:YAG thin disk laser performance at room and cryogenic (80 deg. K) temperatures will be presented. The Yb:YAG gain media is cooled using either a pressurized R134A refrigerant system or by a two-phase liquid nitrogen spray boiler. Interchangeable mounting caps allow the same Yb:YAG media to be switched between the two systems. This allows direct comparison of lasing, amplified spontaneous emission, and temperature performance between 20 deg. C and -200 deg. C.

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Document Details

Document Type
Technical Report
Publication Date
Sep 09, 2016
Accession Number
AD1009239

Entities

People

  • B. A. Saarloos
  • D. P. Rini
  • H. Bostanci
  • J. J. Lindauer
  • N. Vretenar
  • Peter A. Petérson
  • T. Carson
  • T. Newell
  • Tammy J. Lucas
  • W. P. Latham

Organizations

  • University of New Mexico

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Air Force
  • Air Force Research Laboratories
  • Cavity Resonators
  • Cooling
  • Directed Energy Weapons
  • Emission
  • Emission Spectra
  • Geometry
  • Heat Transfer
  • Heat Transfer Coefficients
  • Laser Beams
  • Laser Materials
  • Laser Resonators
  • Lasers
  • Materials
  • Optical Materials

Fields of Study

  • Physics

Readers

  • Combustion and Flow Dynamics.
  • Optical Physics and Photonics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers