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Proceedings Paper

Two-step excitation of He/K mixture for producing coherent XUV radiation
Author(s): Liancheng Zhao; Ruiyi Zhu; Xuelong Liu; Zhenxu Wang; Qi L. Wang; Zuguang Ma
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Paper Abstract

Recently, there has been great interest in the two-step excitation for the generation of coherent XUV radiation with low pump threshold. The two-step excitation process is as follows: the energy is first stored in a metastable level, and subsequently converted into coherent XUV radiation by stimulated resonant anti-Stokes Raman scattering (SRASRS). The He/K mixture two-step pumping system was first proposed by V.O. Panpanyan et al., in 1983. The main kinetic process is that the He*(23 S) state is produced in a discharge. It makes use of strong collisional energy transfer from He* (23S) to populate potassium high lying quartet metastables K (3p53d4s4P5/2). By using 1.209 micrometers and 498 nm laser as the second step excitation, from the quartet state and through SRASRS the 64.3 nm and 59.8 nm coherent XUV radiation is obtained. This paper discusses several physical problems of the system.

Paper Details

Date Published: 28 October 1992
PDF: 6 pages
Proc. SPIE 1726, 1992 Shanghai International Symposium on Quantum Optics, (28 October 1992); doi: 10.1117/12.130479
Show Author Affiliations
Liancheng Zhao, Harbin Institute of Technology (China)
Ruiyi Zhu, Harbin Institute of Technology (China)
Xuelong Liu, Harbin Institute of Technology (China)
Zhenxu Wang, Harbin Institute of Technology (China)
Qi L. Wang, Harbin Institute of Technology (China)
Zuguang Ma, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 1726:
1992 Shanghai International Symposium on Quantum Optics
Yuzhu Wang; Yiqiu Wang; Zugeng Wang, Editor(s)

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