Novel heterodyne Fourier transform spectrometer for the NIR region

Akiko Hirai; Dejiao Lin; Chie Tagaki; Hirokazu Matsumoto

doi:10.1117/12.530938

19 November 2003 Novel heterodyne Fourier transform spectrometer for the NIR region

Akiko Hirai, Dejiao Lin, Chie Tagaki, Hirokazu Matsumoto

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.530938
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

A Fourier transform spectrometer with heterodyne modulation using a moving diffraction grating has been developed for the NIR region. The grating simultaneously acts as a beam splitter and a modulator, which realizes optical frequency shift of incident light for increasing the sensitivity of measurement by heterodyne modulation technique. The difference of diffraction angle is compensated by a collimating lens or a mirror and plane mirrors.

Citation Download Citation

Akiko Hirai, Dejiao Lin, Chie Tagaki, and Hirokazu Matsumoto "Novel heterodyne Fourier transform spectrometer for the NIR region", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.530938

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KEYWORDS

Spectroscopy

Fourier transforms

Heterodyning

Diffraction gratings

Mirrors

Diffraction

Fourier spectroscopy

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