Multistep Energy Migration and Radiationless Relaxation Processes in Phosphor and Laser Crystals.

Abstract

An extensive investigation of the spectroscopic properties of Nd(x)Y(1-x)P5O14 is reported. Time-resolved site-selection spectroscopy and photoacoustic spectroscopy techniques were used as well as standard optical spectroscopy measurements which were made as a function of Nd concentration, temperature, excitation wavelength and laser power. Results show that Nd ions occupy a variety of slightly perturbed sites. No significant energy transfer appears to be taking place between ions in these inequivalent sites. Additional experimental data presented here suggests a new quenching model for neodymium pentaphosphate crystals based on spatial but non-spectral energy migration to surface quenching sites. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 16, 1978
Accession Number
ADA055231

Entities

People

  • Richard C. Powell

Organizations

  • Oklahoma State University–Stillwater

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Coefficients
  • Absorption Cross Sections
  • Energy Bands
  • Energy Levels
  • Energy Transfer
  • Excitation
  • Fluorescence
  • Ground State
  • Laser Materials
  • Measurement
  • Optical Properties
  • Optics
  • Site Selection
  • Spectra
  • Spectroscopy
  • Standards

Fields of Study

  • Physics

Readers

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

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers