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Proceedings Paper

Development of capillary Z-pinch discharge soft x-ray laser
Author(s): Yuanli Cheng; Qiushi Zhu; Yonpeng Zhao; Bohan Luan; Yang Li; Yao Xie; Qi Wang
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Paper Abstract

The work on lasing in Ne-like Ar at 46.9nm by using a Blumlein transmission line is reported. The discharge system consists of a Marx generator with maximum charging voltage of 300kV, a Blumlein transmission line and a pre-pulse circuit. Both results of theory and experiment illustrate that the inherent high-amplitude pre-pulse (~5kA) causes serious wall ablation, low homogeneity of plasma column and there would be no lasing. While the pre-pulse with an amplitude of ~20A greatly reduces ablation, engenders uniform plasma column, and provides necessary condition for lasing. The soft x-ray amplification in Ne-like Ar at 46.9nm has been achieved. The plasma columns are pumped by a 28~36kA current pulse with 80ns half-cycle duration in a 3.1mm-diameter and 12cm-length capillary channels filled with Ar gas. The full width at half-maximum of the laser spike is determined to be ~2ns and the output energy of the laser is estimated to be 3μJ.

Paper Details

Date Published: 11 January 2007
PDF: 6 pages
Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 627913 (11 January 2007); doi: 10.1117/12.725160
Show Author Affiliations
Yuanli Cheng, Harbin Institute of Technology (China)
Qiushi Zhu, Harbin Institute of Technology (China)
Yonpeng Zhao, Harbin Institute of Technology (China)
Bohan Luan, Harbin Institute of Technology (China)
Yang Li, Harbin Institute of Technology (China)
Yao Xie, Harbin Institute of Technology (China)
Qi Wang, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 6279:
27th International Congress on High-Speed Photography and Photonics
Xun Hou; Wei Zhao; Baoli Yao, Editor(s)

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