Repetitive petawatt-class laser with near-diffraction-limited focal spot and transform-limited pulse duration

Cheng Liu, Sudeep Banerjee, Jun Zhang, Shouyuan Chen, Kevin Brown, Jared Mills, Nathan Powers, Baozhen Zhao, Gregory Golovin, Isaac Ghebregziabher, Donald Umstadter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

30 Scopus citations


A repetitive petawatt-class Ti:sapphire laser system operating with high spatial and temporal beam quality is demonstrated. Maximum pulse energy of 30 J is obtained via five multi-pass amplification stages. Closed-loop feedback control systems in the temporal and spatial domains are used to yield Fourier-transform-limited pulse duration (33.7 fs), and diffraction-limited focal spot sizes (with several different tight focusing optics). The laser parameters have been fully characterized at high-power, and are monitored in real-time, to ensure that they meet the experimental requirements for laser-wakefield electron acceleration and x-ray generation.

Original languageEnglish (US)
Title of host publicationSolid State Lasers XXII
Subtitle of host publicationTechnology and Devices
StatePublished - 2013
Externally publishedYes
EventSolid State Lasers XXII: Technology and Devices - San Francisco, CA, United States
Duration: Feb 3 2013Feb 5 2013

Publication series

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


ConferenceSolid State Lasers XXII: Technology and Devices
Country/TerritoryUnited States
CitySan Francisco, CA


  • diffraction limited
  • petawatt
  • spatial and temporal closed loop
  • transform limited
  • vacuum measurement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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