Journal
OPTICS LETTERS
Volume 37, Issue 16, Pages 3363-3365Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.37.003363
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- Consortium for Photon Science and Technology
- Special Coordination Funds for promoting Science and Technology
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We demonstrate the temporal contrast enhancement in a petawatt-class Ti:sapphire chirped-pulse amplification (CPA) laser system. An extra saturable absorber, introduced downstream after a low-gain optical parametric chirped-pulse amplification (OPCPA) preamplifier, has improved the temporal contrast in the system to 1.4 x 10(12) on the subnanosecond time scale at 70 TW power level. We have achieved 28 J of uncompressed broadband output energy with this system, indicating the potential for reaching peak powers near 600 TW. (C) 2012 Optical Society of America
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