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Development of modern mode-locking techniques based on semiconductor saturable absorber mirrors and high-order dispersion compensati-on made possible the generation of ultrashort pulses lasting only few optical cycles directly from the laser.
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  Numerous techniques had been established for ultrashort light pulse generation outside the l aser cavity, being capable of generation of light pulses down to few or even single optical cycle.
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4Â¥: Originally posted by lscser at 2017-03-22 13:22:30
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