Share Email Print
cover

Proceedings Paper

Compact large-aperture Fabry-Perot interferometer modules for gas spectroscopy at mid-IR
Author(s): Uula Kantojärvi; Aapo Varpula; Tapani Antila; Christer Holmlund; Jussi Mäkynen; Antti Näsilä; Rami Mannila; Anna Rissanen; Jarkko Antila; Rolf J. Disch; Torsten A. Waldmann
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

VTT has developed Fabry-Pérot Interferometers (FPI) for visible and infrared wavelengths since 90’s. Here we present two new platforms for mid-infrared gas spectroscopy having a large optical aperture to provide high optical throughput but still enabling miniaturized instrument size. First platform is a tunable filter that replaces a traditional filter wheel, which operates between wavelengths of 4-5 um. Second platform is for correlation spectroscopy where the interferometer provides a comb-like transmission pattern mimicking absorption of diatomic molecules at the wavelength range of 4.7-4.8 um. The Bragg mirrors have 2-4 thin layers of polysilicon and silicon oxide.

Paper Details

Date Published: 8 March 2014
PDF: 10 pages
Proc. SPIE 8992, Photonic Instrumentation Engineering, 89920C (8 March 2014); doi: 10.1117/12.2036336
Show Author Affiliations
Uula Kantojärvi, VTT Technical Research Ctr. of Finland (Finland)
Aapo Varpula, VTT Technical Research Ctr. of Finland (Finland)
Tapani Antila, VTT Technical Research Ctr. of Finland (Finland)
Christer Holmlund, VTT Technical Research Ctr. of Finland (Finland)
Jussi Mäkynen, VTT Technical Research Ctr. of Finland (Finland)
Antti Näsilä, VTT Technical Research Ctr. of Finland (Finland)
Rami Mannila, VTT Technical Research Ctr. of Finland (Finland)
Anna Rissanen, VTT Technical Research Ctr. of Finland (Finland)
Jarkko Antila, VTT Technical Research Ctr. of Finland (Finland)
Rolf J. Disch, SICK AG (Germany)
Torsten A. Waldmann, SICK AG (Germany)


Published in SPIE Proceedings Vol. 8992:
Photonic Instrumentation Engineering
Yakov G. Soskind; Craig Olson, Editor(s)

© SPIE. Terms of Use
Back to Top