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Proceedings Paper

Thermal distortion of the wavefront in a high-intensity laser system for inverse Compton x-ray generation
Author(s): Hiroki Ishikawa; Shinji Ito; Akira Endo; Tatsuya Yanagida; Kenji Torizuka; Fumio Sakai; Masakazu Washio
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Paper Abstract

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(PO4)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.

Paper Details

Date Published: 25 June 2003
PDF: 8 pages
Proc. SPIE 4969, Laser Resonators and Beam Control VI, (25 June 2003); doi: 10.1117/12.478976
Show Author Affiliations
Hiroki Ishikawa, Waseda Univ. (Japan)
Shinji Ito, Femtosecond Technology Research Association (Japan)
Akira Endo, Femtosecond Technology Research Association (Japan)
Tatsuya Yanagida, Femtosecond Technology Research Association (Japan)
Kenji Torizuka, National Institute of Advanced Industrial Science and Technology (Japan)
Fumio Sakai, Femtosecond Technology Research Association (Japan)
Masakazu Washio, Waseda Univ. (Japan)

Published in SPIE Proceedings Vol. 4969:
Laser Resonators and Beam Control VI
Alexis V. Kudryashov; Alan H. Paxton, Editor(s)

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