Details

Autor(en) / Beteiligte

• Jahromi, Khalil Eslami
• Nematollahi, Mohammadreza
• Krebbers, Roderik
• Abbas, Muhammad Ali
• Khodabakhsh, Amir
• Harren, Frans J M

Titel

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

Ist Teil von

• Optics express, 2021-04, Vol.29 (8), p.12381-12397

Ort / Verlag

United States

Erscheinungsjahr

2021

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• 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 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.