Article

Applied Physics B

, Volume 82, Issue 1, pp 31-33

First online:

Optical amplification of argon excimers in the vacuum ultraviolet spectral region, produced by ultrashort-pulse high-intensity-laser-produced electrons

  • Y. MoritaAffiliated withDepartment of Electrical and Electronic Engineering and Photon Science Center, University of Miyazaki Email author 
  • , T. HigashiguchiAffiliated withDepartment of Electrical and Electronic Engineering and Photon Science Center, University of Miyazaki
  • , S. KuboderaAffiliated withDepartment of Electrical and Electronic Engineering and Photon Science Center, University of Miyazaki

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Abstract

Optical-field-induced ionization (OFI) electrons were produced in a 30 cm Ar-filled hollow fiber by shining a high-intensity laser into the fiber. By use of such a long plasma with the help of a multilayer dielectric mirror made for 126 nm emission, we observed significant optical amplification of the Ar2 * emission at 126 nm. The optical amplification resulted in a maximum small signal gain coefficient of 0.16 cm-1 at 126 nm at 10 atm of Ar pressure.