Abstract
Recent advances in all-solid-state ultrafast laser technology have made possible the generation of ultrashort pulses of unprecedented duration and power.1-3 It is now possible to routinely generate near transform-limited pulses, of duration less than 9 femtoseconds from a simple laser oscillator.3,4 These broad-bandwidth, ultrashort pulses can be used as low energy seed pulses for amplifiers based on the chirped-pulse amplification design.5 Although gain narrowing can limit the amplified pulse bandwidth, our results demonstrate that it is possible to amplify sub-25 fs pulses to an energy of >25 millijoules, and that further improvements will be possible in the near future.6
© 1994 Optical Society of America
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