We retrieve the phase signature in coherent imaging based on a quantum cascade laser (QCL) subjected to optical feedback. In the self-mixing scheme, a single QCL acting as a source and detector of THz radiation, is used to obtain the reflection image of a sample as well as the phase profile without ambiguity. We study the phase sensitivity against optical feedback and assess the limit of the phase signal detection. © 2013 IEEE.
Coherent imaging with mid-IR and THz quantum cascade lasers through optical feedback interferometry
Mezzapesa Francesco Paolo;Vitiello Miriam Serena;
2013
Abstract
We retrieve the phase signature in coherent imaging based on a quantum cascade laser (QCL) subjected to optical feedback. In the self-mixing scheme, a single QCL acting as a source and detector of THz radiation, is used to obtain the reflection image of a sample as well as the phase profile without ambiguity. We study the phase sensitivity against optical feedback and assess the limit of the phase signal detection. © 2013 IEEE.File in questo prodotto:
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