Nonlinear interferometer for Fourier-transform mid-infrared gas spectroscopy using near-infrared detection

被引：46
|
作者：
Lindner, Chiara [1 ]
Kunz, Jachin [1 ]
Herr, Simon J. [1 ]
Wolf, Sebastian [1 ]
Kiessling, Jens [1 ]
Kuehnemann, Frank [1 ]
机构：
[1] Fraunhofer Inst Phys Measurement Tech IPM, Georges Kohler Allee 301, D-79110 Freiburg, Germany
来源：
OPTICS EXPRESS | 2021年 / 29卷 / 03期
关键词：
INTERFERENCE; SPECTROMETER; COHERENCE;
D O I：
10.1364/OE.415365
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Nonlinear interferometers allow for mid-infrared spectroscopy with near-infrared detection using correlated photons. Previous implementations have demonstrated a spectral resolution limited by spectrally selective detection. In our work, we demonstrate mid-infrared transmission spectroscopy in a nonlinear interferometer using single-pixel near-infrared detection and Fourier-transform analysis. A sub-wavenumber spectral resolution allows for rotational-lineresolving spectroscopy of gaseous samples in a spectral bandwidth of over 700 cm(-1). We use methane transmission spectra around 3.3 mu m wavelength to characterize the spectral resolution, noise limitations and transmission accuracy of our device. The combination of nonlinear interferometry and Fourier-transform analysis paves the way towards performant and efficient mid-infrared spectroscopy with near-infrared detection. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：4035 / 4047
页数：13
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