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Optics Letters

Optics Letters


  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1110–1112

Optimum signal-to-noise ratio in off-axis integrated cavity output spectroscopy

Christoph Dyroff  »View Author Affiliations

Optics Letters, Vol. 36, Issue 7, pp. 1110-1112 (2011)

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The signal-to-noise ratio (SNR) in off-axis integrated cavity output spectroscopy (OA-ICOS) is investigated and compared to direct absorption spectroscopy using multipass absorption cells [tunable diode laser absorption spectroscopy (TDLAS)]. Applying measured noise characteristics of a near-IR tunable diode laser and detector, it is shown that the optimum SNR is not generally reached at the highest effective absorption path length. Simulations are used to determine the parameters for maximized SNR of OA-ICOS.

© 2011 Optical Society of America

OCIS Codes
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(270.2500) Quantum optics : Fluctuations, relaxations, and noise
(300.6360) Spectroscopy : Spectroscopy, laser

ToC Category:

Original Manuscript: December 23, 2010
Revised Manuscript: February 10, 2011
Manuscript Accepted: February 22, 2011
Published: March 22, 2011

Christoph Dyroff, "Optimum signal-to-noise ratio in off-axis integrated cavity output spectroscopy," Opt. Lett. 36, 1110-1112 (2011)

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