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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.
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Joo et al. (1995) studied this question.
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