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Intracavity phase-matched coherent anti-stokes raman spectroscopy for trace gas detection

Analytical Sciences, ISSN: 1348-2246, Vol: 30, Issue: 1, Page: 75-79
2014
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Review Description

We present a novel, cavity-enhanced spectroscopic technique based on a phase-matched Raman process to detect trace quantities of gas. The essence of this technique is the careful control of cavity dispersion to satisfy the phase-matching condition of coherent anti-Stokes Raman scattering (CARS) enhanced in a high-finesse optical cavity. A 6000-fold improvement of the CARS signal is observed under optimized conditions, indicating that this is a promising tool to quantify Raman-active molecules with an extremely low detection limit. © 2014 The Japan Society for Analytical Chemistry.

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