Abstract
We demonstrate, for the first time to our knowledge, multikilohertz operation of a double-stage optical parametric chirped pulse amplifier with periodically poled stoichiometric crystals, seeded by a homemade Cr:forsterite oscillator operating at . The repetition rate of the amplifier could easily be tuned without the use of electro-optic modulators by using a repetition-rate-tunable kilohertz pump laser operating at and a time-synchronization unit. Amplified total energies of 55.9 and were achieved at 1 and , respectively. After recompression, the pulse width of amplified idler pulses at amounted to .
© 2007 Optical Society of America
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