The Effects of the Pumping Light Penetration and the Powder Density to the Stimulated Emission in Powders of Solid-State Luminophosphors.

Abstract

A laser-like emission without a cavity was obtained (at Lambda ^ 800 nm) in powders of Ti-sapphire laser crystal and compared to that in Nd0.5La0.5Al13(BO3)4. The effect of the material volume density on the stimulated emission in Nd0.5La0.5A13(BO3)4 was experimentally studied. We have found that formation of a hole in a powder sample by a pumping laser beam is advantageous for stimulated emission in Ti-sapphire and disadvantageous in Nd0.5La0.5A13(BO3)4. Using the results of our experimental studies of light propagation in powder laser media, we evaluated the penetration depth and the absorption efficiency in the materials studied and explained most of experimental laser results.

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Document Details

Document Type
Technical Report
Publication Date
Jul 15, 1997
Accession Number
ADA327951

Entities

People

  • M. A. Noginov

Organizations

  • Alabama A & M College

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Absorption Spectra
  • Bulk Materials
  • Coefficients
  • Crystals
  • Experimental Data
  • High Density
  • Laser Beams
  • Laser Materials
  • Lasers
  • Low Density
  • Materials
  • Military Research
  • Particle Size
  • Scattering
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Optical Physics and Photonics.
  • Powder metallurgy of Titanium alloys.
  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Directed Energy - Pulsed-Laser Deposition