We report on a tunable regenerative amplifier that is operational in the near-infrared spectral region from 1230 to 1280 nm based on the vibronic laser material Cr:forsterite. Utilizing the technique of chirped-pulse amplification, we generated pulses as short as 150 fs at 1255 nm at a repetition rate of 1 kHz. Pulse amplification of more than 5 x 10(5) times was observed, with recorded output pulse energies of 34 mu J. Implementation of a second-harmonic generator yielded 110-fs-duration pulses of 7-mu J energy at 625 nm. (C) 1998 Optical Society of America. [References: 7]
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