Continuous-wave reflection imaging using optical feedback interferometry in terahertz and mid-infrared quantum cascade lasers

F. P. Mezzapesa, M. Petruzzella, M Dabbicco, H.E. Beere, D.A. Ritchie, M.S. Vitiello, G. Scamarcio

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)

Abstract

In this paper, we investigate a coherent imaging system based on Terahertz and mid-infrared (MIR) quantum cascade lasers (QCLs) in terms of phase sensitivity against optical feedback. In the self-mixing scheme, a single QCL acting as oscillator, mixer and detector of infrared radiation, is used for continuous-wave reflection imaging as well as phase profiling. We study the dependence of the phase signature on the optical feedback level and assess the limit for phase signal detection.
Original languageEnglish
Pages (from-to)631-633
JournalIEEE Transactions on Terahertz Science and Technology
Volume4
Issue number5
DOIs
Publication statusPublished - 18 Jun 2014

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