Thermal distortion of wavefront in high-intensity-laser system for inverse Compton X-ray generation

Hiroki Ishikawa*, Shinji Ito, Akira Endo, Tatsuya Yanagida, Kenji Torizuka, Fumio Sakai, Masakazu Washio

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


We have developed a stable 7 terawatt (TW) (168 mJ per pulse, 24 fs pulse duration) Ti: sapphire laser system operating at 50 Hz for a generation of femtosecond X-ray pulses by inverse Compton scattering. We corrected the wavefront distortion of these high intensity laser pulses with adaptive optics using a Shack-Hartmann type wavefront sensor and a deformable mirror. We have also started developing a compact all-solid-state Yb: Sr5(PO 4)3F (Yb: S-FAP) laser system to realize a practical X-ray pulse generation system. We measured thermal lensing induced in Yb: S-FAP crystal for design of a high-energy regenerative amplifier. In addition, we measured wavefront of the amplified pulses in the Yb: S-FAP regenerative amplifier with the wavefront sensor.

Original languageEnglish
Pages (from-to)50-57
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2003
EventLaser Resonators and Beam Control VI - San Jose, CA, United States
Duration: 2003 Jan 282003 Jan 30


  • Diode pumped Yb: S-FAP
  • High-intensity laser
  • Thermal distortion

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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