Dual-comb spectroscopy using plasmon-enhanced-waveguide dispersion-compensated quantum cascade lasers

Jonas Westberg; Lukasz A. Sterczewski; Filippos Kapsalidis; Yves Bidaux; Johanna M. Wolf; Mattias Beck; Jérôme Faist; Gerard Wysocki

doi:10.1364/OL.43.004522

Dual-comb spectroscopy using plasmon-enhanced-waveguide dispersion-compensated quantum cascade lasers

Jonas Westberg, Lukasz A. Sterczewski, Filippos Kapsalidis, Yves Bidaux, Johanna M. Wolf, Mattias Beck, Jérôme Faist, Gerard Wysocki

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

In this Letter, we report on sub-millisecond response time mid-infrared dual-comb spectroscopy using a balanced asymmetric (dispersive) dual-comb setup with a matched pair of plasmon-enhanced-waveguide dispersion-compensated quantum cascade lasers. The system performance is demonstrated by measuring spectra of Bromomethane (CH₃Br) and Freon 134a (CH₂FCF₃) at approximately 7.8 μm. A purely computational phase and timing-correction procedure is used to validate the coherence of the quantum cascade lasers frequency combs and to enable coherent averaging over the time scales investigated. The system achieves a noise-equivalent absorption better than 1 × 10−³ Hz⁻¹∕², with a resolution of 9.8 GHz (0.326 cm⁻¹) and an optical bandwidth of 1 THz (32 cm⁻¹), with an average optical power of more than 1 mW per spectral element.

Original language	English (US)
Pages (from-to)	4522-4525
Number of pages	4
Journal	Optics Letters
Volume	43
Issue number	18
DOIs	https://doi.org/10.1364/OL.43.004522
State	Published - Sep 15 2018

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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title = "Dual-comb spectroscopy using plasmon-enhanced-waveguide dispersion-compensated quantum cascade lasers",

abstract = "In this Letter, we report on sub-millisecond response time mid-infrared dual-comb spectroscopy using a balanced asymmetric (dispersive) dual-comb setup with a matched pair of plasmon-enhanced-waveguide dispersion-compensated quantum cascade lasers. The system performance is demonstrated by measuring spectra of Bromomethane (CH3Br) and Freon 134a (CH2FCF3) at approximately 7.8 μm. A purely computational phase and timing-correction procedure is used to validate the coherence of the quantum cascade lasers frequency combs and to enable coherent averaging over the time scales investigated. The system achieves a noise-equivalent absorption better than 1 × 10−3 Hz−1∕2, with a resolution of 9.8 GHz (0.326 cm−1) and an optical bandwidth of 1 THz (32 cm−1), with an average optical power of more than 1 mW per spectral element.",

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AU - Westberg, Jonas

AU - Sterczewski, Lukasz A.

AU - Kapsalidis, Filippos

AU - Bidaux, Yves

AU - Wolf, Johanna M.

AU - Beck, Mattias

AU - Faist, Jérôme

AU - Wysocki, Gerard

PY - 2018/9/15

Y1 - 2018/9/15

N2 - In this Letter, we report on sub-millisecond response time mid-infrared dual-comb spectroscopy using a balanced asymmetric (dispersive) dual-comb setup with a matched pair of plasmon-enhanced-waveguide dispersion-compensated quantum cascade lasers. The system performance is demonstrated by measuring spectra of Bromomethane (CH3Br) and Freon 134a (CH2FCF3) at approximately 7.8 μm. A purely computational phase and timing-correction procedure is used to validate the coherence of the quantum cascade lasers frequency combs and to enable coherent averaging over the time scales investigated. The system achieves a noise-equivalent absorption better than 1 × 10−3 Hz−1∕2, with a resolution of 9.8 GHz (0.326 cm−1) and an optical bandwidth of 1 THz (32 cm−1), with an average optical power of more than 1 mW per spectral element.

AB - In this Letter, we report on sub-millisecond response time mid-infrared dual-comb spectroscopy using a balanced asymmetric (dispersive) dual-comb setup with a matched pair of plasmon-enhanced-waveguide dispersion-compensated quantum cascade lasers. The system performance is demonstrated by measuring spectra of Bromomethane (CH3Br) and Freon 134a (CH2FCF3) at approximately 7.8 μm. A purely computational phase and timing-correction procedure is used to validate the coherence of the quantum cascade lasers frequency combs and to enable coherent averaging over the time scales investigated. The system achieves a noise-equivalent absorption better than 1 × 10−3 Hz−1∕2, with a resolution of 9.8 GHz (0.326 cm−1) and an optical bandwidth of 1 THz (32 cm−1), with an average optical power of more than 1 mW per spectral element.

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ER -

Dual-comb spectroscopy using plasmon-enhanced-waveguide dispersion-compensated quantum cascade lasers

Abstract

All Science Journal Classification (ASJC) codes

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