Fourier transform and grating-based spectroscopy with a mid-infrared supercontinuum source for trace gas detection in fruit quality monitoring | Zendy

Khalil Eslami Jahromi | Zendy; Mohammadreza Nematollahi | Zendy; R. Krebbers | Zendy; M. A. Abbas | Zendy; Amir Khodabakhsh | Zendy; Frans J. M. Harren | Zendy

Open Access

Fourier transform and grating-based spectroscopy with a mid-infrared supercontinuum source for trace gas detection in fruit quality monitoring

Author(s) -

Khalil Eslami Jahromi,

Mohammadreza Nematollahi,

R. Krebbers,

M. A. Abbas,

Amir Khodabakhsh,

Frans J. M. Harren

Publication year - 2021

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.418072

Subject(s) - supercontinuum , spectrometer , optics , trace gas , grating , fourier transform spectroscopy , fourier transform infrared spectroscopy , spectral resolution , materials science , spectroscopy , infrared , fourier transform , imaging spectrometer , remote sensing , physics , spectral line , optical fiber , quantum mechanics , astronomy , meteorology , photonic crystal fiber , geology

We present a multi-species trace gas sensor based on a fast, compact home-built Fourier transform spectrometer (FTS) combined with a broadband mid-infrared supercontinuum (SC) source. The spectrometer covers the spectral bandwidth of the SC source (2 - 4 µm) and provides a best spectral resolution of 1 GHz in 6 seconds. It has a detection sensitivity of a few hundred of ppbv Hz -1/2 for different gas species. We study the performance of the developed spectrometer in terms of precision, linearity, long-term stability, and multi-species detection. We use the spectrometer for measuring fruit-produced volatiles under different atmospheric conditions and compare the performance with a previously developed scanning grating-based spectrometer.

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