1. Notions of ultrafast optics: spectro-temporal shaping of femtosecond pulses
1.1 Femtosecond pulses
Femtosecond pulses (1 fs = 10 - 15 s) are ultra-short wave packets, characterized by a carrier frequency and an envelope, whose duration is a few tens of optical cycles. Each wave packet corresponds to a continuum of frequencies, or wavelengths, with a particular phase relationship.
As shown in figure 1 , the time profile of the electric field of a pulse of duration
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Notions of ultrafast optics: spectro-temporal shaping of femtosecond pulses
Liquid crystals and spatial light modulators
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