Absolute frequency referencing in the long wave infrared using a quantum cascade laser frequency comb

被引：9

作者：

Komagata, K. N. ^{[1
]}

Gianella, M. ^{[2
]}

Jouy, P. ^{[3
]}

Kapsalidis, F. ^{[4
]}

Shahmohammadi, M. ^{[4
]}

Beck, M. ^{[4
]}

Matthey, R. ^{[1
]}

Wittwer, V. J. ^{[1
]}

Hugi, A. ^{[3
]}

Faist, J. ^{[4
]}

Emmenegger, L. ^{[2
]}

Suedmeyer, T. ^{[1
]}

Schilt, S. ^{[1
]}

机构：

[1] Univ Neuchatel, Lab Temps Frequence, Inst Phys, Ave Bellevaux 51, CH-2000 Neuchatel, Switzerland

[2] Empa, Lab Air Pollut EnvironmentalTechnol, CH-8600 Dubendorf, Switzerland

[3] IRsweep AG, Laubisrutistr 44, CH-8712 Stafa, Switzerland

[4] Swiss Fed Inst Technol, Inst Quantum Elect, CH-8093 Zurich, Switzerland

来源：

OPTICS EXPRESS | 2022年 / 30卷 / 08期

基金：

瑞士国家科学基金会; 欧盟地平线“2020”;

关键词：

FOURIER-TRANSFORM SPECTROSCOPY; MIDINFRARED SPECTROSCOPY; MU-M; BAND; STABILIZATION; SPECTROMETER; LOCKING;

D O I：

10.1364/OE.447650

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Optical frequency combs (OFCs) based on quantum cascade lasers (QCLs) have transformed mid-infrared spectroscopy. However, QCL-OFCs have not yet been exploited to provide a broadband absolute frequency reference. We demonstrate this possibility by performing comb-calibrated spectroscopy at 7.7 mu m (1305 cm(-1)) using a QCL-OFC referenced to a molecular transition. We obtain 1.5.10(-10) relative frequency stability (100-s integration time) and 3.10(-9) relative frequency accuracy, comparable with state-of-the-art solutions relying on nonlinear frequency conversion. We show that QCL-OFCs can be locked with sub-Hz-level stability to a reference fur hours, thus promising their use as metrological tools for the mid-infrared. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

引用

页码：12891 / 12901

页数：11

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