Application of adaptive feedback loop for ultraviolet femtosecond pulse shaper control

Yu Huang, Arthur Dogariu

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


We apply an adaptive feedback loop to control a ultra-violet (UV) femtosecond pulse shaping apparatus. The adaptive feedback control is implemented by a continuous parameter genetic algorithm. We use the adaptive shaper to compensate for the pulse chirp. The genetic algorithm produces a pulse with a width of 115 fs, identical to that of the transformlimited pulse. We then apply the adaptive shaper to the Stokes pulse in a femtosecond coherent anti-Stokes Raman scattering (CARS) experiment on dipicolinic acid solution. The algorithm maximizes the first CARS beat signal at the probe pulse delay of 650 fs. We confirm that a transformlimited Stokes pulse achieves the best detection sensitivity.

Original languageEnglish (US)
Pages (from-to)10089-10093
Number of pages5
JournalOptics Express
Issue number21
StatePublished - Oct 16 2006

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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