Line by-line imaging of laser-produced plasmas using one-dimensional coherent four-wave mixing

An experimental technique based on coherent one‐dimensional four‐wave mixing (FWM) with hyper‐Raman resonances was developed for line‐by‐line imaging of the atomic distribution of excited atoms in a low‐temperature plasma of optical breakdown. Comparison of the measured time dependences of FWM inten...

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Bibliographic Details
Published in:Journal of Raman spectroscopy 2000-08, Vol.31 (8-9), p.677-687
Main Authors: Akimov, D. A., Fedotov, A. B., Koroteev, N. I., Miles, R. B., Naumov, A. N., Sidorov-Biryukov, D. A., Zheltikov, A. M.
Format: Article
Language:English
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Summary:An experimental technique based on coherent one‐dimensional four‐wave mixing (FWM) with hyper‐Raman resonances was developed for line‐by‐line imaging of the atomic distribution of excited atoms in a low‐temperature plasma of optical breakdown. Comparison of the measured time dependences of FWM intensity and plasma transmission with the results of numerical simulations of plasma expansion allows the assessment of the influence of phase mismatch and one‐photon absorption on FWM in a laser‐produced plasma and demonstrates that FWM images of atomic spatial distributions free of distortions due to phase mismatch and absorption can be obtained for certain stages of plasma expansion. Copyright © 2000 John Wiley & Sons, Ltd.
ISSN:0377-0486
1097-4555
DOI:10.1002/1097-4555(200008/09)31:8/9<677::AID-JRS569>3.0.CO;2-F