Spectral phase retrieval from interferometric autocorrelation by a combination of graduated optimization and genetic algorithms.
We describe a method for retrieving spectral phase information from second harmonic interferometric autocorrelation measurements supplemented by the use of the observed spectral intensity. By applying a combination of graduated optimization and genetic algorithms, accurate phase retrieval of laser pulses as short as a few optical cycles was obtained from the measured autocorrelation and spectral intensity. The effectiveness of the combined algorithms is demonstrated on a set of significantly different femtosecond pulse shapes.
Yang
Wenlong
W
Institute for Quantum Studies and Department of Physics & Astronomy, Texas A&M University, College Station, TX 77843-4242, USA. ywlonion@physics.tamu.edu
Springer
Matthew
M
Strohaber
James
J
Kolomenski
Alexandre
A
Schuessler
Hans
H
Kattawar
George
G
Sokolov
Alexei
A