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Ionic excimers and alkali dimer triplet-state excimer lasers

Published online by Cambridge University Press:  09 March 2009

Da Xing ,
Ken-Ichi Ueda  and
Hiroshi Takuma
Da Xing
Affiliation:
Institute for Laser Science, University of Electro-Communications, Chofu-shi, Tokyo 182, Japan
Ken-Ichi Ueda
Affiliation:
Institute for Laser Science, University of Electro-Communications, Chofu-shi, Tokyo 182, Japan
Hiroshi Takuma
Affiliation:
Institute for Laser Science, University of Electro-Communications, Chofu-shi, Tokyo 182, Japan
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Abstract

Vacuum UV fluorescences from ionic alkali-halide and rare-gas alkali excimers were observed by e-beam excitation. The two diffuse emissions centered at 185 and 154 nm from the CsF vapor were attributed to the bound-free B2Σ+ → X2Σ+ and D2Π → X2Σ+ bands of (CsF)+, respectively. And, the 164- and 133-nm diffuse bands from gas the mixture of Xe or Kr with hot vapor of Rb were assigned to the emissions of (XeRb)+ and (KrRb)+ ionic excimers. In addition, amplified spontaneous emissions of the Na2 violet, K2 yellow, and Rb2 orange diffuse bands were observed from e-beam-excited alkali vapor with argon buffer gas. The continuum spectra centered at 436, 574, and 604 nm were attributed to triplet-triplet Na2, K2, and Rb2 23Πg → 13Σu+ bound-free transitions, respectively. The dissociative recombination of Na3+, K3+, or Rb3+ is discussed as an efficient formation process of the upper states in e-beam pumping.

Type
Research Article
Information
Laser and Particle Beams , Volume 11 , Issue 1 , March 1993 , pp. 3 - 13
Copyright
Copyright © Cambridge University Press 1993

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