High-repetition-rate coherent femtosecond pulse amplification with an external passive optical cavity |
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| Authors: | Jones R Jason Ye Jun |
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| Affiliation: | JILA, National Institute of Standards and Technology and University of Colorado, Boulder, Boulder, Colorado 80309-0440, USA. rjjones@jilau1.colorado.edu |
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| Abstract: | We demonstrate a general technique for enhancement of femtosecond pulses from a pulse train through their coherent buildup inside a high-finesse cavity. Periodic extraction of the intracavity pulse by means of a fast switch provides a net energy gain of 42 to >70 times for 38-58-fs pulse durations. Starting with an actively stabilized but otherwise standard mode-locked laser system, we demonstrate pulses of >200-nJ energy. |
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