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  4. Double modulation techniques in Fourier Transform infrared photoluminescence
 
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1989
Conference Paper
Title

Double modulation techniques in Fourier Transform infrared photoluminescence

Other Title
Doppelmodulationsverfahren in der Infrarot-Photolumineszenz-Fourierspektroskopie
Abstract
FT photoluminescence is a powerful tool to study mid infrared emission. However, problems may arise from thermal background radiation. A new phase locked modulation technique is presented and will be compared with existing double modulation (lock-in) techniques. The basic idea in our new technique is to apply a phase sensitive excitation of the luminescence instead of phase sensitive detection to separate the luminescence spectra from dominant thermal background radiation. As examples, luminescence of ZnS:Ni and Hg0.73Cd0.27Te are studied.
Author(s)
Fuchs, F.
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Lusson, A.
Koidl, P.
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Wagner, J.
Mainwork
7th International Conference on Fourier Transform Spectroscopy 1989. Proceedings  
Conference
International Conference on Fourier Transform Spectroscopy 1989  
Language
English
Fraunhofer-Institut für Angewandte Festkörperphysik IAF  
Keyword(s)
  • Fourier transform

  • GaAs

  • infrared spectroscopy

  • Infrarot-Spektroskopie

  • local vibrational modes

  • lokalisierte Schwingungsmode

  • luminescence

  • spectroscopy

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