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  • 2017 European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference
  • (Optica Publishing Group, 2017),
  • paper CH_1_2

Mid-Infrared Dual-Comb Spectroscopy for Real-Time Gas Analysis With an Optical Parametric Oscillator

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Abstract

In the visible or near-infrared, dual-comb spectrometer based on mode-locked sources leads to high spectral resolution, low recording time and enhanced sensitivity with not traded off, since massively parallel broadband detection can be performed. One challenge is to transfer the benefit of dual-comb spectroscopy to the mid-infrared where strong fundamental ro-vibrational transitions of various molecules and the large number of detectable molecules are of importance for gas analysis. The generation of coherent short-pulses in the mid-infrared for dual-comb spectroscopy is achieved in different ways [1]. Among them, Optical parametric oscillators (OPOs) offer simultaneously high mid-infrared power and broadband spectral coverage [2]. Since 2012, few demonstrations of mid-infrared dual-comb spectrometers based on OPO have been reported [3,4]. In this paper, we present a dual-comb spectrometer working in the 3-5 μm spectral region for real-time gas analysis.

© 2017 IEEE

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