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Optics Letters

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  • Vol. 28, Iss. 10 — May. 15, 2003
  • pp: 804–806

Observation of vacuum-ultraviolet Ar2* radiation gain at 126 nm produced by an ultrashort high-intensity laser pulse propagating in a hollow fiber

Masanori Kaku, Takeshi Higashiguchi, Shoichi Kubodera, and Wataru Sasaki  »View Author Affiliations


Optics Letters, Vol. 28, Issue 10, pp. 804-806 (2003)
http://dx.doi.org/10.1364/OL.28.000804


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Abstract

We observed a small-signal gain of Ar2* emission at 126 nm by use of a hollow fiber to guide the high-intensity laser propagation in high-pressure Ar. The small-signal gain coefficient was measured to be 0.05 cm-1 at 126nm. Kinetic analysis revealed that the electrons produced by the high-intensity laser through an optical-field-induced ionization process initiated the Ar2* production processes. The increase in the emission intensity was measured to be exp(2.5), with an increase in the fiber length.

© 2003 Optical Society of America

OCIS Codes
(140.2180) Lasers and laser optics : Excimer lasers
(140.7240) Lasers and laser optics : UV, EUV, and X-ray lasers
(260.7190) Physical optics : Ultraviolet

Citation
Masanori Kaku, Takeshi Higashiguchi, Shoichi Kubodera, and Wataru Sasaki, "Observation of vacuum-ultraviolet Ar2* radiation gain at 126 nm produced by an ultrashort high-intensity laser pulse propagating in a hollow fiber," Opt. Lett. 28, 804-806 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-10-804


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