Accession Number:

ADP011933

Title:

Stokes and Anti Stokes Luminescence in LiTaO3:Ho

Descriptive Note:

Conference proceedings

Corporate Author:

POLISH ACADEMY OF SCIENCES WROCLAW INSTITUTE OF LOW TEMPERATURE AND STRUCTURE RESEARCH

Report Date:

2001-01-01

Pagination or Media Count:

4.0

Abstract:

The paper deals with the excitation and decay of excited states of holmium in LiTaO3 single crystals. Particular attention is paid to processes governing a population build up on the sup 5 S sub 2 and sup 5 I sub 7 metastable states whose quantum efficiencies are sufficiently high to be considered as initial levels for a laser transition. We observed for the first time, to our knowledge, an efficient conversion of the 647.1 nm light of a krypton ion laser into green luminescence in the material studied. Based upon analysis of excited state relaxation dynamics it is concluded that the mechanism involved is the excited state absorption from the long lived sup 5 I sub 7 level. Efficient single wavelength excitation is due to coincidence of transition energies of the ground state absorption and excited state absorption.

Subject Categories:

  • Inorganic Chemistry
  • Crystallography
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE