Application of adaptive feedback loop for ultra-violet femtosecond pulse shaper control

作     者：Huang, Yu Dogariu, Arthur 

作者机构：Princeton Univ Appl Phys & Mat Sci Grp Engn Quadrangle Princeton NJ 08544 USA 

出 版 物：《OPTICS EXPRESS》 (Opt. Express)

年 卷 期：2006年第14卷第21期

页      面：10089-10094页

核心收录：

学科分类：070207[理学-光学] 07[理学] 08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：.Genetic algorithm Raman spectroscopy modulators chirp Shaper dipicolinic acid solution Stokes pulse femtosecond pulse shaping adaptive feedback femtosecond coherent CARS experiment best detection 

摘      要：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. (c) 2006 Optical Society of America