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Proceedings Paper

Vacuum ultraviolet argon excimer laser at 126 nm excited by a high intensity laser
Author(s): Masanori Kaku; Shinya Harano; Masahito Katto; Shoichi Kubodera
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Paper Abstract

We have observed the optical amplification of the Ar2* excimer at 126 nm pumped by optical-field-induced ionization (OFI) caused by an infrared high-intensity laser. We have evaluated similar small signal gain coefficients of approximately 1.0 cm-1 in two different experiments, where OFI Ar plasmas as gain media were produced in free space filled with Ar and inside an Ar-filled hollow fiber. This indicates that the function of a hollow fiber was to guide the infrared excitation laser and VUV Ar2* emissions, and not to regulate the OFI plasma. Despite the gain coefficient value at 126 nm, the laser oscillation has not been observed. This was limited by the optical quality of available state-of-the-art vacuum ultraviolet optics.

Paper Details

Date Published: 15 November 2010
PDF: 6 pages
Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 775113 (15 November 2010); doi: 10.1117/12.880749
Show Author Affiliations
Masanori Kaku, Univ. of Miyazaki (Japan)
Shinya Harano, Univ. of Miyazaki (Japan)
Masahito Katto, Univ. of Miyazaki (Japan)
Shoichi Kubodera, Univ. of Miyazaki (Japan)

Published in SPIE Proceedings Vol. 7751:
XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Tanja Dreischuh; Petar A. Atanasov; Nikola V. Sabotinov, Editor(s)

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