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Ti:sapphire regenerative amplifier for ultrashort high-power multikilohertz pulses without an external stretcher

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Abstract

We report a simple and robust Ti:sapphire regenerative amplifier without prepulse stretching. Pulse stretching by positive group-velocity dispersion and negative third-order dispersion are provided by highly dispersive flint glass prisms inside the regenerative amplifier cavity. Using a single-grating compressor, we obtain transform-limited 60-fs Gaussian pulses at up to a 5-kHz repetition rate with energy of 50 μJ/pulse.

© 1995 Optical Society of America

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