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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 36, Iss. 14 — Jul. 15, 2011
  • pp: 2719–2721

Amplification properties of vacuum ultraviolet Ar 2 * produced by infrared high-intensity laser

Masanori Kaku, Shinya Harano, Ryota Matsumoto, Masahito Katto, and Shoichi Kubodera  »View Author Affiliations

Optics Letters, Vol. 36, Issue 14, pp. 2719-2721 (2011)

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We report optical amplification of Ar 2 * at 126 nm , pumped by optical-field-induced ionization (OFI) created by an infrared high-intensity laser. A gain–length product of 0.84 was obtained by using multipass amplification with a vacuum ultraviolet (VUV) cavity. The gain–length product was increased up to 4.3 through the use of single-pass amplification with a VUV reflector and a hollow 5.0 cm -long fiber. Similar small signal gain coefficients of 0.84 and 0.86 cm 1 were obtained in two different experiments, in which OFI Ar plasma gain media were produced in free space filled with Ar and inside an Ar-filled hollow fiber.

© 2011 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
(260.7210) Physical optics : Ultraviolet, vacuum

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 20, 2011
Manuscript Accepted: June 11, 2011
Published: July 14, 2011

Masanori Kaku, Shinya Harano, Ryota Matsumoto, Masahito Katto, and Shoichi Kubodera, "Amplification properties of vacuum ultraviolet Ar2* produced by infrared high-intensity laser," Opt. Lett. 36, 2719-2721 (2011)

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