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Opt Lett. 2005 Jul 15;30(14):1843-5.

5 Hz, > 250 mJ optical parametric chirped-pulse amplifier at 1053 nm.

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Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623, USA.


A 250 mJ, 5 Hz repetition rate optical parametric chirped-pulse amplifier with near-Fourier-transform-limited, 430 fs pulses and a beam that can be focused to near the diffraction limit is demonstrated. A pump laser with engineered spatial and temporal profiles allows an overall pump-to-signal conversion efficiency of 34% to be achieved.


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