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  • International Quantum Electronics Conference
  • OSA Technical Digest (Optica Publishing Group, 1994),
  • paper QMB6

Far-infrared radiation (λ ≈ 60 μm) by difference frequency generation in coupled quantum wells

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Abstract

The generation of coherent far infrared radiation in quantum semiconductor structures has recently attracted considerable attention. Different physical means of generating far ir have been explored such as sequential resonant tunneling,1 coherent charge oscillations in coupled wells2 and Bloch oscillations in superlattices.3 In this paper we report the first observation of far-infrared radiation (λ ~ 60 μm) by difference frequency generation associated with intersubband transitions in coupled quantum wells.

© 1994 Optical Society of America

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