Title :
Coherent imaging with mid-IR and THz quantum cascade lasers through optical feedback interferometry
Author :
Mezzapesa, F.P. ; Petruzzella, M. ; Dabbicco, M. ; Vitiello, M.S. ; Beere, H.E. ; Ritchie, D.A. ; Scamarcio, G.
Author_Institution :
UOS Bari, IFN, Bari, Italy
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.
Keywords :
laser beam applications; laser feedback; light interferometry; microwave photonics; optical signal detection; quantum cascade lasers; reflectivity; terahertz wave detectors; terahertz wave imaging; QCL; THz quantum cascade laser; THz radiation detector; THz radiation source; coherent imaging; mid-IR quantum cascade laser; optical feedback interferometry; phase profile; phase sensitivity; phase signal detection; reflection image; self-mixing method; Optical imaging; Optical reflection; Optical sensors;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665597
