We demonstrate superresolution in position tracking sensing based on feedback interferometry in quantum cascade lasers (QCLs). QCLs with optical feedback make highly compact sensors since they work as mixer oscillator and detector of infrared radiation. Additionally, QCL continuous-wave emission remains stable at steady state in strong feedback regimes, permitting to gain control on the nonlinearity of the QCL active medium. Here, nonlinear frequency mixing in a QCL-based common-path interferometer is exploited to unveil object's position with nanometer-scale resolution, far beyond the intrinsic limit of half-wavelength. Experimental results are in excellent agreement with simulations based on Lang-Kobayashi model encompassing multiple-target dynamics.

Nonlinear frequency mixing in QCL-based interferometry: Beyond the intrinsic resolution / Mezzapesa, Fp.; Columbo, L.; Brambilla, M.; Dabbicco, M.; Scamarcio, G.. - STAMPA. - 9370:(2015). (Intervento presentato al convegno Quantum Sensing and Nanophotonic Devices XII tenutosi a San Francisco, CA nel 8-12 Febbraio 2015) [10.1117/12.2078829].

Nonlinear frequency mixing in QCL-based interferometry: Beyond the intrinsic resolution

Brambilla, M.;Dabbicco, M.;
2015-01-01

Abstract

We demonstrate superresolution in position tracking sensing based on feedback interferometry in quantum cascade lasers (QCLs). QCLs with optical feedback make highly compact sensors since they work as mixer oscillator and detector of infrared radiation. Additionally, QCL continuous-wave emission remains stable at steady state in strong feedback regimes, permitting to gain control on the nonlinearity of the QCL active medium. Here, nonlinear frequency mixing in a QCL-based common-path interferometer is exploited to unveil object's position with nanometer-scale resolution, far beyond the intrinsic limit of half-wavelength. Experimental results are in excellent agreement with simulations based on Lang-Kobayashi model encompassing multiple-target dynamics.
2015
Quantum Sensing and Nanophotonic Devices XII
9781628414608
Nonlinear frequency mixing in QCL-based interferometry: Beyond the intrinsic resolution / Mezzapesa, Fp.; Columbo, L.; Brambilla, M.; Dabbicco, M.; Scamarcio, G.. - STAMPA. - 9370:(2015). (Intervento presentato al convegno Quantum Sensing and Nanophotonic Devices XII tenutosi a San Francisco, CA nel 8-12 Febbraio 2015) [10.1117/12.2078829].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/123410
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