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

被引：1

作者：

Saemian, Mohammadreza ^{[1
]}

Del Balzo, Livia ^{[1
]}

Gacemi, Djamal ^{[1
]}

Todorov, Yanko ^{[1
]}

Rodriguez, Etienne ^{[1
]}

Lopez, Olivier ^{[2
]}

Darquie, Benoit ^{[2
]}

Li, Lianhe ^{[3
]}

Davies, Alexander Giles ^{[3
]}

Linfield, Edmund ^{[3
]}

Vasanelli, Angela ^{[1
]}

Sirtori, Carlo ^{[1
]}

机构：

[1] Univ Paris Cite, Sorbonne Univ, Univ PSL, Lab Phys,Ecole Normale Super,ENS,CNRS, F-75005 Paris, France

[2] Univ Sorbonne Paris Nord, Lab Phys Lasers, CNRS, F-93430 Villetaneuse, France

[3] Univ Leeds, Sch Elect & Elect Engn, Woodhouse Lane, Leeds LS2 9JT, England

来源：

NANOPHOTONICS | 2024年 / 13卷 / 10期

基金：

欧盟地平线“2020”;

关键词：

infrared detection; unipolar quantum devices; frequency stabilization; QUANTUM-CASCADE LASERS; FREQUENCY STABILIZATION; HIGH-PRECISION; MU-M; LINEWIDTH; GHZ; PHOTODETECTORS; COMB;

D O I：

10.1515/nanoph-2023-0787

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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 mu m and 9 mu m. 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.

引用

页码：1765 / 1772

页数：8

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