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  • Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies
  • OSA Technical Digest (CD) (Optica Publishing Group, 2008),
  • paper CTuP4

Correlation between the subband electronic temperatures and the internal quantum efficiency of THz quantum cascade lasers

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Abstract

We have measured the electronic temperature of the upper laser level (TEu) during continuous-wave operation in THz quantum-cascade lasers and found an experimental correlation with the occurrence of stimulated emission and the internal quantum efficiency.

© 2008 Optical Society of America

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