Mid-infrared hyperspectral sensor based on MEMS Fabry-Pérot interferometer for stand-off sensing applications

Abba Saleh; Mikhail Mekhrengin; Timo Dönsberg; Teemu Kääriäinen; Guillaume Genoud; Juha Toivonen

doi:10.1038/s41598-022-23758-w

Mid-infrared hyperspectral sensor based on MEMS Fabry-Pérot interferometer for stand-off sensing applications

Abba Saleh (Corresponding Author), Mikhail Mekhrengin, Timo Dönsberg, Teemu Kääriäinen, Guillaume Genoud, Juha Toivonen

BA6605 Optical spectroscopy

Tampere University

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

1 Citation (Scopus)

Abstract

We report a novel hyperspectral sensor employing a Fabry-Pérot interferometer based on micro-electro-mechnical system and a custom mid-infrared supercontinuum laser. The Fabry-Pérot interferometer allows on-axis filtering, of spectral components of supercontinuum light backscattered from a target, with a spectral resolution of about 25 nm. We demonstrated hyperspectral identification of black polypropylene (PP) and polyethylene (PE500) using the 3–3.5 μm region of the supercontinuum spectrum and a corresponding measurement rate of 62.5 spectra / s. The resulted spectra show excellent agreement with the reference based on an FTIR spectrometer. Furthermore, we showed that the coloring of the plastics has no effect on their identification at this wavelength range.

Original language	English
Article number	19392
Journal	Scientific Reports
Volume	12
Issue number	1
DOIs	https://doi.org/10.1038/s41598-022-23758-w
Publication status	Published - 12 Nov 2022
MoE publication type	A1 Journal article-refereed

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title = "Mid-infrared hyperspectral sensor based on MEMS Fabry-P{\'e}rot interferometer for stand-off sensing applications",

abstract = "We report a novel hyperspectral sensor employing a Fabry-P{\'e}rot interferometer based on micro-electro-mechnical system and a custom mid-infrared supercontinuum laser. The Fabry-P{\'e}rot interferometer allows on-axis filtering, of spectral components of supercontinuum light backscattered from a target, with a spectral resolution of about 25 nm. We demonstrated hyperspectral identification of black polypropylene (PP) and polyethylene (PE500) using the 3–3.5 μm region of the supercontinuum spectrum and a corresponding measurement rate of 62.5 spectra / s. The resulted spectra show excellent agreement with the reference based on an FTIR spectrometer. Furthermore, we showed that the coloring of the plastics has no effect on their identification at this wavelength range.",

author = "Abba Saleh and Mikhail Mekhrengin and Timo D{\"o}nsberg and Teemu K{\"a}{\"a}ri{\"a}inen and Guillaume Genoud and Juha Toivonen",

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AU - Saleh, Abba

AU - Mekhrengin, Mikhail

AU - Dönsberg, Timo

AU - Kääriäinen, Teemu

AU - Genoud, Guillaume

AU - Toivonen, Juha

N1 - Funding Information: A.S. acknowledges the support from Finnish Foundation for Technology Promotion, and Finnish Cultural Foundation. The authors also acknowledge Academy of Finland (Flagship PREIN, 320165).

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N2 - We report a novel hyperspectral sensor employing a Fabry-Pérot interferometer based on micro-electro-mechnical system and a custom mid-infrared supercontinuum laser. The Fabry-Pérot interferometer allows on-axis filtering, of spectral components of supercontinuum light backscattered from a target, with a spectral resolution of about 25 nm. We demonstrated hyperspectral identification of black polypropylene (PP) and polyethylene (PE500) using the 3–3.5 μm region of the supercontinuum spectrum and a corresponding measurement rate of 62.5 spectra / s. The resulted spectra show excellent agreement with the reference based on an FTIR spectrometer. Furthermore, we showed that the coloring of the plastics has no effect on their identification at this wavelength range.

AB - We report a novel hyperspectral sensor employing a Fabry-Pérot interferometer based on micro-electro-mechnical system and a custom mid-infrared supercontinuum laser. The Fabry-Pérot interferometer allows on-axis filtering, of spectral components of supercontinuum light backscattered from a target, with a spectral resolution of about 25 nm. We demonstrated hyperspectral identification of black polypropylene (PP) and polyethylene (PE500) using the 3–3.5 μm region of the supercontinuum spectrum and a corresponding measurement rate of 62.5 spectra / s. The resulted spectra show excellent agreement with the reference based on an FTIR spectrometer. Furthermore, we showed that the coloring of the plastics has no effect on their identification at this wavelength range.

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Mid-infrared hyperspectral sensor based on MEMS Fabry-Pérot interferometer for stand-off sensing applications

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