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

Journal article


Publication Details

Author(s): Lins B, Engelbrecht R, Schmauß B
Journal: Applied Physics B-Lasers and Optics
Publisher: Springer Verlag (Germany)
Publication year: 2012
Volume: 106
Pages range: 999-1008
ISSN: 0946-2171
Language: English


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.



FAU Authors / FAU Editors

Engelbrecht, Rainer PD Dr.
Lehrstuhl für Hochfrequenztechnik
Lins, Bastian
Lehrstuhl für Technische Thermodynamik
Schmauß, Bernhard Prof. Dr.-Ing.
Professur für Hochfrequenztechnik mit dem Schwerpunkt Optische Hochfrequenztechnik und Photonik


Additional Organisation
Erlangen Graduate School in Advanced Optical Technologies


How to cite

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.

BibTeX: 

Last updated on 2018-09-08 at 16:23