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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 33, Iss. 7 — Apr. 1, 2008
  • pp: 645–647

High-contrast, high-intensity laser pulse generation using a nonlinear preamplifier in a Ti:sapphire laser system

Hiromitsu Kiriyama, Michiaki Mori, Yoshiki Nakai, Takuya Shimomura, Manabu Tanoue, Atushi Akutsu, Shuji Kondo, Shuhei Kanazawa, Hajime Okada, Tomohiro Motomura, Hiroyuki Daido, Toyoaki Kimura, and Toshiki Tajima  »View Author Affiliations


Optics Letters, Vol. 33, Issue 7, pp. 645-647 (2008)
http://dx.doi.org/10.1364/OL.33.000645


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Abstract

We report a high-contrast, high-intensity Ti:sapphire chirped-pulse amplification system that incorporates a nonlinear preamplifier based on optical parametric chirped-pulse amplification (OPCPA). By cooling the Ti:sapphire crystal in the final amplifier down to 77 K , the chirped-pulses are amplified to 2.9 J at a 10 Hz repetition rate without a thermal lensing effect. Pulse compression down to 19 fs duration obtained after amplification indicates a peak power of 80 TW . With the OPCPA, the temporal contrast is significantly improved to better than 7 × 10 9 in a few picoseconds interval prior to the main laser pulse.

© 2008 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(320.7090) Ultrafast optics : Ultrafast lasers

ToC Category:
Nonlinear Optics

History
Original Manuscript: December 5, 2007
Revised Manuscript: February 4, 2008
Manuscript Accepted: February 16, 2008
Published: March 19, 2008

Citation
Hiromitsu Kiriyama, Michiaki Mori, Yoshiki Nakai, Takuya Shimomura, Manabu Tanoue, Atushi Akutsu, Shuji Kondo, Shuhei Kanazawa, Hajime Okada, Tomohiro Motomura, Hiroyuki Daido, Toyoaki Kimura, and Toshiki Tajima, "High-contrast, high-intensity laser pulse generation using a nonlinear preamplifier in a Ti:sapphire laser system," Opt. Lett. 33, 645-647 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-7-645


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