Abstract

We describe one-dimensional smoothing by spectral dispersion (SSD) in high fluence on the Technical Integration Line. The experimental results indicate that SSD did not influence the load capacity of the laser facility. The near- and far-field analysis prove that adopting SSD could smooth the high-frequency modulations in the near field and dramatically suppress 10μm100μm spatial modulations in the far field. The focal spot contrast decreases from 2.58 to 0.80 after using SSD and adaptive optics. Adopting a 0.31nm bandwidth frequency-modulated laser pulse and a 1200l/mm dispersion grating, experimental results proved that 97% 3ω energy passed through the laser entrance hole using a 4m focal length wedged lens and gold foil target with an 1100μm hole.

© 2011 Optical Society of America

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