Open AccessQCL-based nonlinear sensing of independent targets dynamics
Author(s) -
Francesco P. Mezzapesa,
Lorenzo Columbo,
Maurizio Dabbicco,
Massimo Brambilla,
Gaetano Scamarcio
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.005867
Subject(s) - nonlinear system , interferometry , cascade , optics , physics , displacement (psychology) , mixing (physics) , measure (data warehouse) , stability (learning theory) , optical path , nonlinear optics , laser , computer science , psychology , chemistry , chromatography , quantum mechanics , database , machine learning , psychotherapist
We demonstrate a common-path interferometer to measure the independent displacement of multiple targets through nonlinear frequency mixing in a quantum-cascade laser (QCL). The sensing system exploits the unique stability of QCLs under strong optical feedback to access the intrinsic nonlinearity of the active medium. The experimental results using an external dual cavity are in excellent agreement with the numerical simulations based on the Lang-Kobayashi equations.