A 5-MW Laser for Ultrafast Spectroscopy at a 10-fsec Time Scale

The Ti:sapphire laser is rapidly becoming the light source in all ultrafast laboratories providing, reliably, 10-15 fsec pulses with 4-5 nJ energy at 80 MHz repetition rate. Meanwhile, a wide range of nonlinear ultrafast experiments would greatly benefit from a Ti:sapphire laser-based light source that generates more powerful pulses at variable repetition rates, without sacrificing the ultrashort pulse duration or any other performance of a femtosecond Ti:sapphire laser. We have recently succeeded in building such a laser by incorporating a cavity dumper at a stategic position into the resonator of a self-modelocked Ti:sapphire laser.

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