Ultrashort pulse driven optical-field-ionization x-ray lasers

Jiunn Yuan Lin, Ming Chang Chou, Ping Hsun Lin, Chih An Lin, Szu Yuan Chen, Jyhpyng Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Efficient optical-field-ionization x-ray lasers driven by femtosecond laser pulses have been demonstrated in clustered gas jets. With a tight focusing configuration, near saturation outputs of Pd-like xenon laser at 41.8 nm and Ni-like krypton laser at 32.8 nm are generated at low pump energy of 200 mJ. By using the axicon-ignitor-heater scheme to produce a 9-mm-long plasma waveguide in a pure krypton gas jet, the lasing photon number of Ni-like Kr laser at 32.8 nm is dramatically enhanced by about three orders of magnitude in comparison to that without plasma waveguide, resulting in a photon number of 8&times1010 and an energy conversion efficiency of 2×10-6 with a pump pulse of just 235 mJ. Besides for producing various OFI collisional-excitation x-ray lasers of sufficient photon number for practical applications, an optically-preformed plasma waveguide may also be a favorable choice for achieving OFI recombination x-ray lasers and inner-shell x-ray lasers.

Original languageEnglish
Title of host publicationSoft X-Ray Lasers and Applications VII
StatePublished - 2007
EventSoft X-Ray Lasers and Applications VII - San Diego, CA, United States
Duration: 29 Aug 200730 Aug 2007

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceSoft X-Ray Lasers and Applications VII
Country/TerritoryUnited States
CitySan Diego, CA


  • Optical field ionization
  • Plasma waveguide
  • X-ray laser


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