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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 24 — Dec. 2, 2013
  • pp: 29231–29239

High-contrast 2.0 Petawatt Ti:sapphire laser system

Yuxi Chu, Xiaoyan Liang, Lianghong Yu, Yi Xu, Lu Xu, Lin Ma, Xiaoming Lu, Yanqi Liu, Yuxin Leng, Ruxin Li, and Zhizhan Xu  »View Author Affiliations


Optics Express, Vol. 21, Issue 24, pp. 29231-29239 (2013)
http://dx.doi.org/10.1364/OE.21.029231


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Abstract

We report on a 2.0 PW femtosecond laser system at 800 nm based on the scheme of chirped pulse amplification using Ti:sapphire crystals, which is the highest peak power ever achieved from a femtosecond laser system. Combining the index-matching cladding technique and the precise control of the time delay between the input seed pulse and pump pulses, the parasitic lasing in the final booster amplifier is effectively suppressed at the pump energy of 140 J at 527 nm. The maximum output energy from the final amplifier is 72.6 J, corresponding to a conversion efficiency of 47.2% from the pump energy to the output laser energy. The measured spectral width of the amplified output pulse from the final amplifier is 60.8 nm for the full width at half-maximum (FWHM) by controlling the spectral evolution in the amplifier chain, and the recompressed pulse duration is 26.0 fs. The technology of cross-polarized wave (XPW) is applied in a broadband front-end, and the pulse contrast is improved to ~1.5 × 10−11 (−100 ps before the main pulse) which is measured at 83 TW power level with a repetition rate of 5 HZ.

© 2013 Optical Society of America

OCIS Codes
(140.3280) Lasers and laser optics : Laser amplifiers
(140.3590) Lasers and laser optics : Lasers, titanium
(140.5560) Lasers and laser optics : Pumping
(140.7090) Lasers and laser optics : Ultrafast lasers

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: September 26, 2013
Revised Manuscript: November 8, 2013
Manuscript Accepted: November 8, 2013
Published: November 18, 2013

Citation
Yuxi Chu, Xiaoyan Liang, Lianghong Yu, Yi Xu, Lu Xu, Lin Ma, Xiaoming Lu, Yanqi Liu, Yuxin Leng, Ruxin Li, and Zhizhan Xu, "High-contrast 2.0 Petawatt Ti:sapphire laser system," Opt. Express 21, 29231-29239 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-24-29231


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