Two schemes for trace detection using cavity ringdown spectroscopy

Authors: Morville, J.¹; Romanini, D.²; Kachanov, A.A.¹; Chenevier, M.¹

Source: Applied Physics B, Volume 78, Numbers 3-4, February 2004 , pp. 465-476(12)

Publisher: Springer

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Abstract:

We describe and compare two schemes of high-sensitivity cavity ringdown spectroscopy (CRDS), both functioning with telecom diode lasers. The first (cw-CRDS) gives high spectral resolution, which is useful for low-pressure trace detection or for laboratory spectroscopy applications. We present a compact prototype partly based on fiber technology. The second scheme exploits optical feedback (of-CRDS) and results in a much simpler setup, more appropriate for realizing low-cost trace-detection devices.

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s00340-003-1363-8

Affiliations: 1: Laboratoire de Spectrométrie Physique – CNRS UMR 5588, Université J. Fourier, Grenoble I, B.P. 87, 38402, Saint Martin d'Hères Cedex, France, 2: Laboratoire de Spectrométrie Physique – CNRS UMR 5588, Université J. Fourier, Grenoble I, B.P. 87, 38402, Saint Martin d'Hères Cedex, France, Email: daniel.romanini@ujf-grenoble.fr

Publication date: 2004-02-01