一种基于频率转换注入的可扩展多程激光腔，用于非集体汤姆逊散射。

A scalable multipass laser cavity based on injection by frequency conversion for noncollective Thomson scattering.

作者信息

Schaeffer D B, Kugland N L, Constantin C G, Everson E T, Van Compernolle B, Ebbers C A, Glenzer S H, Niemann C

机构信息

Department of Physics and Astronomy, University of California, Los Angeles, Los Angeles, California 90095, USA.

出版信息

Rev Sci Instrum. 2010 Oct;81(10):10D518. doi: 10.1063/1.3460626.

DOI:10.1063/1.3460626

PMID:21033873

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.

摘要

本文介绍了一种可扩展装置，该装置利用频率转换注入来建立一个多程腔，用于低密度等离子体上的非集体汤姆逊散射。与单程装置相比，该腔被证明能在目标体积内支持超过10次通过，且目标能量增加了400%。进行了瑞利散射实验，证明了该装置对于研究密度约为10(12)-10(13) cm(-3)的低密度等离子体的可行性。还在加利福尼亚大学洛杉矶分校大型等离子体装置上进行了高重复率、低能量单程汤姆逊散射装置实验，结果表明，由于腔装置每次脉冲固有的更高信号，多程腔可能比高重复率方法具有显著优势。