6 March 2013 Repetitive petawatt-class laser with near-diffraction-limited focal spot and transform-limited pulse duration
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Abstract
A repetitive petawatt-class Ti:sapphire laser system operating with high spatial and temporal beam quality is demonstrated. Maximum pulse energy of 30 J is obtained via five multi-pass amplification stages. Closed-loop feedback control systems in the temporal and spatial domains are used to yield Fourier-transform-limited pulse duration (33.7 fs), and diffraction-limited focal spot sizes (with several different tight focusing optics). The laser parameters have been fully characterized at high-power, and are monitored in real-time, to ensure that they meet the experimental requirements for laser-wakefield electron acceleration and x-ray generation.
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Cheng Liu, Cheng Liu, Sudeep Banerjee, Sudeep Banerjee, Jun Zhang, Jun Zhang, Shouyuan Chen, Shouyuan Chen, Kevin Brown, Kevin Brown, Jared Mills, Jared Mills, Nathan Powers, Nathan Powers, Baozhen Zhao, Baozhen Zhao, Gregory Golovin, Gregory Golovin, Isaac Ghebregziabher, Isaac Ghebregziabher, Donald Umstadter, Donald Umstadter, } "Repetitive petawatt-class laser with near-diffraction-limited focal spot and transform-limited pulse duration", Proc. SPIE 8599, Solid State Lasers XXII: Technology and Devices, 859919 (6 March 2013); doi: 10.1117/12.2005008; https://doi.org/10.1117/12.2005008
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