Abstract

Using a Gaussian-to-flattop beam reshaper and a frequency-doubling crystal, we demonstrate highly efficient and spatially uniform pulse compression of 1mJ, 100fs pulses from a regenerative Ti:sapphire amplifier. The technique has general applicability to all-bulk self-defocusing-type cascaded-quadratic compressors, providing a way to increase peak power and intensity for a wide range of amplified femtosecond pulsed lasers.

© 2007 Optical Society of America

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