Optical and EPR spectroscopy of Zn:Cr:ZnSe and Zn:Fe:ZnSe crystals

Academic Article

Abstract

  • © 2014 Elsevier B.V. All rights reserved. Optical and EPR characterization of Cr and Fe doped ZnSe crystals annealed in Zn vapor revealed a strong bleaching of the divalent state of transition metal ions. Photo induced EPR kinetics were studied in 20-80 K temperature range. Analysis of time-dependent data reveals Cr1+ signal rise time decreases with increasing temperature. The non-exponential decay of Cr1+ concentration were analyzed using Auger-type recombination process. The photoluminescence quantum yield of Cr2+ ions at 5E(D) → 5T2(D) mid-IR transition excited via chromium ionization process was measured to be close to 100%.
  • Published In

  • Optical Materials  Journal
  • Digital Object Identifier (doi)

    Author List

  • Fedorov VV; Konak T; Dashdorj J; Zvanut ME; Mirov SB
  • Start Page

  • 262
  • End Page

  • 266
  • Volume

  • 37
  • Issue

  • C