A scalable multipass laser cavity based on injection by frequency conversion for noncollective Thomson scattering |
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Authors: | Schaeffer D B Kugland N L Constantin C G Everson E T Van Compernolle B Ebbers C A Glenzer S H Niemann C |
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Affiliation: | Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, California 90095, USA. quod17@physics.ucla.edu |
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Abstract: | A scalable setup using injection by frequency conversion to establish a multipassing cavity for noncollective Thomson scattering on low density plasmas is presented. The cavity is shown to support >10 passes through the target volume with a 400% increase in energy on target versus a single-pass setup. Rayleigh scattering experiments were performed and demonstrate the viability of the cell to study low density plasmas of the order of 10(12)-10(13)?cm(-3). A high-repetition, low-energy, single-pass Thomson scattering setup was also performed on the University of California, Los Angeles Large Plasma Device and shows that the multipass cavity could have a significant advantage over the high-repetition approach due to the cavity setup's inherently higher signal per shot. |
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