Techniques
A pulse shaper may be visualized as a modulator. The input pulse is multiplied with a modulating function to get a desired output pulse. The modulating function in pulse shapers may be in time domain or a frequency domain (obtained by Fourier Transform of time profile of pulse). This gives rise to two well known femtosecond pulse shaping techniques:
a) Direct space-to-time pulse shaping (DST-PS)
b) Fourier transform pulse shaping (FT-PS)
Read more about this topic: Femtosecond Pulse Shaping
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