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  • Vol. 19, Iss. 2 — Jan. 15, 1994
  • pp: 144–146

Signal-to-noise ratio enhancement in frequency-modulation spectrometers by digital signal processing

Haris Riris, Clinton B. Carlisle, Russell E. Warren, and David E. Cooper  »View Author Affiliations


Optics Letters, Vol. 19, Issue 2, pp. 144-146 (1994)
http://dx.doi.org/10.1364/OL.19.000144


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Abstract

A signal-to-noise ratio enhancement of an order of magnitude was observed when digital signal-processing algorithms were applied to two diode-laser frequency-modulation spectrometers in the near-infrared and midinfrared spectral ranges. These algorithms include digital bandpass filters, a Wiener filter, a matched filter, and a least-squares fit. Digital signal processing has a practical advantage over other noise suppression techniques because it is easy to implement and to adapt to all experiment configurations without any physical modifications or additions to the spectrometer.

© 1994 Optical Society of America

History
Original Manuscript: August 13, 1993
Published: January 15, 1994

Citation
Haris Riris, Clinton B. Carlisle, Russell E. Warren, and David E. Cooper, "Signal-to-noise ratio enhancement in frequency-modulation spectrometers by digital signal processing," Opt. Lett. 19, 144-146 (1994)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-19-2-144


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