Software-switching between direct absorption and wavelength modulation spectroscopy for the investigation of ADC resolution requirements

Lins B, Engelbrecht R, Schmauß B (2012)


Publication Language: English

Publication Type: Journal article

Publication year: 2012

Journal

Publisher: Springer Verlag (Germany)

Book Volume: 106

Pages Range: 999-1008

DOI: 10.1007/s00340-011-4827-2

Abstract

We present a tunable diode laser spectrometer that can be software-switched between a wavelength modulation spectroscopy (WMS) operation mode and the direct absorption spectroscopy (DAS) technique on a per-scan basis. The new setup allows a direct comparison between the two techniques under equal hardware and system environment conditions. In this work, we compare the impact of analog-to-digital converter resolution for operation in WMS and DAS mode. Example concentration evaluations show that in the DAS approach, relative absorptions smaller than the least significant bit can be measured with scan averaging and FIR-filtering applied. With full resolution, both techniques show similar performance in our setup, with a slight advantage for the WMS implementation. © Springer-Verlag 2012.

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APA:

Lins, B., Engelbrecht, R., & Schmauß, B. (2012). Software-switching between direct absorption and wavelength modulation spectroscopy for the investigation of ADC resolution requirements. Applied Physics B-Lasers and Optics, 106, 999-1008. https://dx.doi.org/10.1007/s00340-011-4827-2

MLA:

Lins, Bastian, Rainer Engelbrecht, and Bernhard Schmauß. "Software-switching between direct absorption and wavelength modulation spectroscopy for the investigation of ADC resolution requirements." Applied Physics B-Lasers and Optics 106 (2012): 999-1008.

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