title: Adaptive-feedback spectral-phase control for interactions with transform-limited ultrashort high-power laser pulses.
abstract: Fourier-transform-limited light pulses were obtained at the laser-plasma interaction point of a 100-TW peak-power laser in vacuum. The spectral-phase distortion induced by the dispersion mismatching between the stretcher, compressor, and dispersive materials was fully compensated for by means of an adaptive closed-loop. The coherent temporal contrast on the sub-picosecond time scale was two orders of magnitude higher than that without adaptive control. This novel phase control capability enabled the experimental study of the dependence of laser wakefield acceleration on the spectral phase of intense laser light.
authors.forename: Cheng
authors.initials: C
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
authors.forename: Shouyuan
authors.initials: S
authors.lastname: Chen
authors.forename: Gregory
authors.initials: G
authors.lastname: Golovin
authors.forename: Sudeep
authors.initials: S
authors.lastname: Banerjee
authors.forename: Baozhen
authors.initials: B
authors.lastname: Zhao
authors.forename: Nathan
authors.initials: N
authors.lastname: Powers
authors.forename: Isaac
authors.initials: I
authors.lastname: Ghebregziabher
authors.forename: Donald
authors.initials: D
authors.lastname: Umstadter