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室温下在大气窗口的超灵敏外差检测。

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

作者信息

Saemian Mohammadreza, Del Balzo Livia, Gacemi Djamal, Todorov Yanko, Rodriguez Etienne, Lopez Olivier, Darquié Benoit, Li Lianhe, Davies Alexander Giles, Linfield Edmund, Vasanelli Angela, Sirtori Carlo

机构信息

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

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

出版信息

Nanophotonics. 2024 Jan 18;13(10):1765-1772. doi: 10.1515/nanoph-2023-0787. eCollection 2024 Apr.

DOI:10.1515/nanoph-2023-0787
PMID:39635619
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11501748/
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.

摘要

我们报告了在4.8微米和9微米的两个不同大气窗口中，在单极量子光电探测器上用本地振荡器对量子级联激光器进行室温外差检测的情况。通过采用一种有源稳定技术测量到了几皮瓦的噪声等效功率，在该技术中本地振荡器和信号被锁相。测得的外差噪声等效功率比直接检测获得的结果低六个数量级。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/769f/11501748/59f3b60c7a09/j_nanoph-2023-0787_fig_004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/769f/11501748/eb98e4edf328/j_nanoph-2023-0787_fig_001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/769f/11501748/4ed8a43f2985/j_nanoph-2023-0787_fig_002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/769f/11501748/8a427ee1135f/j_nanoph-2023-0787_fig_003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/769f/11501748/59f3b60c7a09/j_nanoph-2023-0787_fig_004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/769f/11501748/eb98e4edf328/j_nanoph-2023-0787_fig_001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/769f/11501748/4ed8a43f2985/j_nanoph-2023-0787_fig_002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/769f/11501748/8a427ee1135f/j_nanoph-2023-0787_fig_003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/769f/11501748/59f3b60c7a09/j_nanoph-2023-0787_fig_004.jpg

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Ultra-sensitive heterodyne detection at room temperature in the atmospheric windows.室温下在大气窗口的超灵敏外差检测。
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本文引用的文献

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High-responsivity operation of quantum cascade detectors at 9 µm.量子级联探测器在9微米波长下的高响应度运行
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Quantum cascade laser.量子级联激光器。
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