Ultra-sensitive heterodyne detection at room temperature in the atmospheric windows-Reference-Cited by-同舟云学术

Ultra-sensitive heterodyne detection at room temperature in the atmospheric windows

Published:2024-01-18 Issue:10 Volume:13 Page:1765-1772
ISSN:2192-8614
Container-title:Nanophotonics
language:en
Short-container-title:

Author:

Saemian Mohammadreza¹^ORCID,Del Balzo Livia¹^ORCID,Gacemi Djamal¹^ORCID,Todorov Yanko¹^ORCID,Rodriguez Etienne¹^ORCID,Lopez Olivier²,Darquié Benoit²,Li Lianhe³^ORCID,Davies Alexander Giles³^ORCID,Linfield Edmund³^ORCID,Vasanelli Angela¹^ORCID,Sirtori Carlo¹^ORCID

Affiliation:

1. Laboratoire de Physique de l’École Normale Supérieure , ENS, Université PSL, CNRS, Sorbonne Université, Université Paris Cité , 75005 Paris , France

2. Laboratoire de Physique des Lasers , CNRS, Université Sorbonne Paris Nord , 93430 Villetaneuse , France

3. School of Electronics and Electrical Engineering , University of Leeds , Woodhouse Lane , Leeds LS2 9JT , UK

Abstract

Abstract We report room temperature heterodyne detection of a quantum cascade laser beaten with a local oscillator on a unipolar quantum photodetector in two different atmospheric windows, at 4.8 µm and 9 µm. A noise equivalent power of few pW is measured by employing an active stabilization technique in which the local oscillator and the signal are locked in phase. The measured heterodyne noise equivalent power is six orders of magnitude lower than that obtained with direct detection.

Funder

H2020 Future and Emerging Technologies

ENS – Thales Chair

Agence Nationale de la Recherche

Publisher

Walter de Gruyter GmbH

Link

https://www.degruyter.com/document/doi/10.1515/nanoph-2023-0787/pdf

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