Phase compensating algorithm investigation of real-time adaptive femtosecond pulse shaping
2013
Based on the real-time adaptive femtosecond pulse shaping system, the phase compensating algorithms
which can effectively compensate the output shaping waveform distortions are investigated in detail.
The simulated-annealing algorithm that can modify the output pulse temporal waveforms iteratively
toward the target shapes using the second harmonic generating frequency resolved optical gating
(SHG-FROG) measurement as feedback is proposed. Compared with the cross-correlation feedback
measurement method, the output based on the SHG-FROG measurement method is better and the
temporal chirp of the output pulse is compensated more effectively. Moreover the performance of the
SHG-FROG measurement feedback algorithm is compared to other exemplary standard approaches
such as the Genetic Algorithm based on the cross-correlation feedback measurement method, the result
is much better.
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