GHz Heterodyne generation using Two DFB Mid-IR QCL lasers on a 9µm QWIP

Daniele Palaferri; Yanko Todorov; Azzurra Bigioli; Djamal Gacemi; Alireza Mottaghizadeh; Allegra Calabrese; Angela Vasanelli; Lianhe Li; A. Giles Davies; Edmund H. Linfield; Filippos Kapsalidis; Mattias Beck; Jérôme Faist; Carlo Sirtori

doi:10.1364/EUVXRAY.2018.JT4A.5

High-Brightness Sources and Light-driven Interactions
OSA Technical Digest (online) (Optica Publishing Group, 2018),
paper JT4A.5
•https://doi.org/10.1364/EUVXRAY.2018.JT4A.5

GHz Heterodyne generation using Two DFB Mid-IR QCL lasers on a 9µm QWIP

Daniele Palaferri, Yanko Todorov, Azzurra Bigioli, Djamal Gacemi, Alireza Mottaghizadeh, Allegra Calabrese, Angela Vasanelli, Lianhe Li, A. Giles Davies, Edmund H. Linfield, Filippos Kapsalidis, Mattias Beck, Jérôme Faist, and Carlo Sirtori

Mid-Infrared Coherent Sources 2018

Strasbourg France
26–28 March 2018
ISBN: 978-1-943580-40-8

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D. Palaferri, Y. Todorov, A. Bigioli, D. Gacemi, A. Mottaghizadeh, A. Calabrese, A. Vasanelli, L. Li, A. G. Davies, E. H. Linfield, F. Kapsalidis, M. Beck, J. Faist, and C. Sirtori, "GHz Heterodyne generation using Two DFB Mid-IR QCL lasers on a 9µm QWIP," in High-Brightness Sources and Light-driven Interactions, OSA Technical Digest (online) (Optica Publishing Group, 2018), paper JT4A.5.

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Abstract

We report the implementation of a heterodyne measurement setup using two DFB Mid-IR QCL lasers on a 9µm Quantum Well Infrared Photodetector (QWIP). We present the measurement of the signal-to-noise ratio characterization of the detector thanks to the heterodyne technique and the obtained frequency stability for the QCL in terms of a linewidth inferior to 3MHz at 300 KHz of resolution bandwidth.

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