Relaxation Dynamics of Excited States of Er(3+) in YVO4 Single Crystals

Abstract

Crystals of Er:YVO4 were grown by Czochralski method. Uniformly doped and good quality crystals have been obtained. The lifetimes of the (sup 4 S sub 3/2), and the luminescence dynamics were studied as a function of temperature in the region 5-500K. The green luminescence around 550 nm has been observed in excitation by the Ti:sapphire laser into (sup 4 I sub 11/2) level. The excitation spectrum recorded for (sup 4 S sub 3/2) has been compared with absorption cross section spectrum and calculated ESA spectrum for (sup 4 I sub 1/2) - (sup 4 F sub 7/2) transition. The contribution of ESA process in upconversion phenomenon under excitation into (sup 4 I sub 11/2) has been assessed. The section and the gain coefficient for (sup 4 I sub 13/2) - (sup 4 I sub 15/2) transition of Er(3+) in YVO4 have been calculated.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2001
Accession Number
ADP011932

Entities

People

  • G. Dominiak-dzik
  • M. Swirkowicz
  • P. Solarz
  • S. Golab
  • T. Lukasiewicz

Organizations

  • Polish Academy of Sciences

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Cross Sections
  • Absorption Spectra
  • Coefficients
  • Dynamics
  • Emission
  • Emission Spectra
  • Energy Gaps
  • Energy Levels
  • Excitation
  • Laser Materials
  • Luminescence
  • Materials
  • Sapphire
  • Single Crystals
  • Spectra
  • Transitions

Fields of Study

  • Physics

Readers

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

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers