CAVITY-ENHANCED ABSORPTION SPECTROSCOPY WITH A MODE-LOCKED FEMTOSECOND LASER
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Date
2004
Journal Title
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Publisher
Ohio State University
Abstract
The wide spectral coverage and high sensitivity of Mode-Locked Cavity Enhanced Absorption Spectroscopy (ML-CEAS) are illustrated by the observation of a very high overtone transition of $C_{2}H_{2}$ in the blue spectral region (420 nm, 8 quanta of CH stretch excitation), which was easily accessed by frequency-doubling a modelocked femtosecond Ti:Sapphire laser. The detection limit is about $10^{-8}/cm$. The rotational analysis of this $\Sigma^{+}_{u} - \Sigma^{+}_{g}$ parallel band, centred at $23813.244 cm^{-1}$, is presented and the vibrational assignment is discussed. T.Gherman, S. Kassi, A. Campargue, D. Romanini Chem. Phys. Lett. 383, 353-358 (2004)
Description
Author Institution: Laboratoire de Spectrom\'{e}trie Physique --- CNRS UMR 5588, Universit\'{e} J. Fourier-Grenoble I