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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 14 — Jul. 15, 2014
  • pp: 4140–4143

Enhanced XUV pulse generation at 89  nm via nonlinear interaction of UV femtosecond filaments

Di Wang, Wenxue Li, Liangen Ding, and Heping Zeng  »View Author Affiliations

Optics Letters, Vol. 39, Issue 14, pp. 4140-4143 (2014)

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We demonstrated efficient generation of ultrafast extreme ultraviolet (XUV) pulses at 89 nm from an intense 267 nm UV femtosecond filamentation in argon gas. The XUV pulse generation efficiency was significantly enhanced through UV filament termination from the argon gas into the background vacuum that prevented backconversion of the generated third-harmonic XUV to the fundamental-wave UV pulses. This was further combined with noncollinear UV filament interaction that produced volume-plasma to pre-extract XUV pulses from the filament core, resulting in further XUV enhancement. The generated 89 nm XUV pulses reached what is so far, to our knowledge, the highest pulse energy of 190 nJ.

© 2014 Optical Society of America

OCIS Codes
(140.3610) Lasers and laser optics : Lasers, ultraviolet
(140.7090) Lasers and laser optics : Ultrafast lasers
(140.7240) Lasers and laser optics : UV, EUV, and X-ray lasers
(140.3613) Lasers and laser optics : Lasers, upconversion

ToC Category:
Lasers and Laser Optics

Original Manuscript: April 16, 2014
Revised Manuscript: May 31, 2014
Manuscript Accepted: June 6, 2014
Published: July 9, 2014

Di Wang, Wenxue Li, Liangen Ding, and Heping Zeng, "Enhanced XUV pulse generation at 89  nm via nonlinear interaction of UV femtosecond filaments," Opt. Lett. 39, 4140-4143 (2014)

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