If the pulse shaper is fully calibrated, this technique allows controlling the spectral phase of ultrashort pulses using a simple optical setup with no moving parts.
3.
The phase scan in MIIPS is realized with introducing a well-known reference function, f ( \ omega ), by the pulse shaper to locally cancel distortions by the unknown spectral phase, \ Phi ( \ omega ), of the pulse.
4.
The MIIPS method is also based on second harmonic generation ( SHG ) in a non-linear crystal; however, instead of temporally scanning a replica of the pulse as in autocorrelation, a controllable and varying GDD is applied to the pulse through a pulse shaper.
5.
Generation of sequences of ultrashort optical pulses is key in realizing ultra high speed optical networks, Optical Code Division Multiple Access ( OCDMA ) systems, chemical and biological reaction triggering and monitoring etc . Based on the requirement, pulse shapers may be designed to stretch, compress or produce a train of pulses from a single input pulse.
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