doi: 10.1364/ol.22.000712.
High-average-power kilohertz-repetition-rate sub-100-fs Ti:sapphire amplifier system
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- PMID: 18185637
- DOI: 10.1364/ol.22.000712
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High-average-power kilohertz-repetition-rate sub-100-fs Ti:sapphire amplifier system
Opt Lett.
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Abstract
We report on a femtosecond Ti:sapphire laser amplifier system that generates pulse energies >5 mJ at a 1-kHz repetition rate. The system consists of regenerative and multipass amplifiers and uses the technique of chirped-pulse amplification. When the system was seeded with 70-fs pulses at 800 nm from a self-mode-locked Ti:sapphire oscillator, amplified pulses of 94-fs duration at a repetition rate of 1 kHz and an average output power of 5.4 W were produced. The amplified pulse-repetition rate is variable from 250 Hz to 3 kHz. Pulse energies of >7.5 mJ were obtained at 500 and 250 Hz.
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