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Opt Express. 2005 Aug 22;13(17):6497-503.

Imaging with THz quantum cascade lasers using a Schottky diode mixer.

Abstract

An imaging system in reflection geometry based on a multimode 2.9 THz quantum cascade laser as radiation source is reported. The beating between neighbouring longitudinal modes is detected using a room temperature point-contact Schottky diode as mixing element. We show that the technique can, in principle, give a dynamic range of 60 dB with a time constant of ~ 10 mus.

PMID:
19498665
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