Share Email Print

Proceedings Paper

Nonlinear frequency mixing in QCL-based interferometry: beyond the intrinsic resolution
Author(s): Francesco P. Mezzapesa; Lorenzo L. Columbo; Massimo Brambilla; Maurizio Dabbicco; Gaetano Scamarcio
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper 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.

Paper Details

Date Published: 8 February 2015
PDF: 7 pages
Proc. SPIE 9370, Quantum Sensing and Nanophotonic Devices XII, 937015 (8 February 2015); doi: 10.1117/12.2078829
Show Author Affiliations
Francesco P. Mezzapesa, Politecnico di Bari, CNR, Univ. degli Studi di Bari (Italy)
Lorenzo L. Columbo, Politecnico di Bari (Italy)
CNR-Istituto di Fotonica e Nanotecnologie (Italy)
Massimo Brambilla, Politecnico di Bari, CNR, Univ. degli Studi di Bari (Italy)
Maurizio Dabbicco, Politecnico di Bari, CNR, Univ. degli Studi di Bari (Italy)
Gaetano Scamarcio, Politecnico di Bari, CNR, Univ. degli Studi di Bari (Italy)

Published in SPIE Proceedings Vol. 9370:
Quantum Sensing and Nanophotonic Devices XII
Manijeh Razeghi; Eric Tournié; Gail J. Brown, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?