title: Robust orthogonal parameterization of evolution strategy for adaptive laser pulse shaping.
abstract: Many spectroscopic applications of femtosecond laser pulses require properly-shaped spectral phase profiles. The optimal phase profile can be programmed on the pulse by adaptive pulse shaping. A promising optimization algorithm for such adaptive experiments is evolution strategy (ES). Here, we report a four fold increase in the rate of convergence and ten percent increase in the final yield of the optimization, compared to the direct parameterization approach, by using a new version of ES in combination with Legendre polynomials and frequency-resolved detection. Such a fast learning rate is of paramount importance in spectroscopy for reducing the artifacts of laser drift, optical degradation, and precipitation.
authors: Optical Sciences group, MESA + Institute for Nanotechnology, University of Twente, the Netherlands. jafarpoura@gmail.com
authors: Aliakbar
authors: A
authors: Jafarpour
authors: Janne
authors: J
authors: Savolainen
authors: Rianne
authors: R
authors: de Jong
authors: Jacob
authors: J
authors: Middag
authors: Daan P
authors: DP
authors: Sprünken
authors: Peter
authors: P
authors: van der Walle
authors: Di
authors: D
authors: Yang
authors: Jennifer L
authors: JL
authors: Herek
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D004867:Equipment Design; D007834:Lasers; D008962:Models, Theoretical; D055095:Optics and Photonics; D012815:Signal Processing, Computer-Assisted; D013053:Spectrophotometry / Q000379:methods*; D013997:Time Factors