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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 1 — Jan. 9, 2006
  • pp: 438–445

Prepulse-free, multi-terawatt, sub-30-fs laser system

Hiromitsu Kiriyama, Norihiro Inoue, Yutaka Akahane, and Koichi Yamakawa  »View Author Affiliations

Optics Express, Vol. 14, Issue 1, pp. 438-445 (2006)

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We have built a prepulse-free, multi-terawatt, ultrashort pulse laser system, which combines both conventional laser amplification and optical parametric chirped pulse amplification (OPCPA) techniques. By employing an OPCPA system after the regenerative amplifier in a Ti:sapphire chirped pulse amplification laser chain, we have dramatically enhanced the prepulse contrast by 6 orders of magnitude. A prepulse contrast of better than 4.4 × 10-11 has been measured with a high energy broadband pulse of 24 mJ at 10 Hz repetition rate from the OPCPA system. Using a subsequent four-pass Ti:sapphire amplifier, we have achieved an amplified energy of 279 mJ and an ultrashort recompressed amplified pulse duration of 23.5 fs, corresponding to the peak powers for OPCPA and four-pass amplifier of 0.5 TW and 5.9 TW, respectively.

© 2006 Optical Society of America

OCIS Codes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Ultrafast Optics

Hiromitsu Kiriyama, Norihiro Inoue, Yutaka Akahane, and Koichi Yamakawa, "Prepulse-free, multi-terawatt, sub-30-fs laser system," Opt. Express 14, 438-445 (2006)

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