Use of Broadband, Continuous-Wave Diode Lasers in Cavity Ring-Down Spectroscopy for Liquid Samples

Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA.
Applied Spectroscopy (Impact Factor: 1.88). 06/2003; 57(5):571-3. DOI: 10.1366/000370203321666614
Source: PubMed


Cavity ring-down spectroscopy (CRDS) is an extremely sensitive absorption technique that has been applied primarily to gas samples, which are characterized by having narrow absorption features. Recently, CRDS has also been applied to liquid samples, which have broad absorption features. The use of small inexpensive diode lasers as light sources for liquid samples is demonstrated. The low cost coupled with the ease and technical straightforwardness of application gives this technique wide appeal.

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    • "Recently, a start was made with the implementation of cavity ring-down spectroscopy (CRDS) as an absorbance detector for LC [8] [9]. While CRDS is a well-established technique for gas-phase studies [10] [11], its application to the liquid phase has only recently gained interest [12] [13] [14] [15] [16] [17]. In principle, CRDS offers extremely high sensitivity due to its inherent multi-pass configuration . "
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