Measurements of smoothing rates for smoothing by spectral dispersion (SSD) of high-power, solid-state laser beams used for inertial confinement fusion (ICF) research are reported. Smoothing rates were obtained from the intensity distributions of equivalent target plane images for laser pulses of varying duration. Simulations of the experimental data with the known properties of the phase plates and the frequency modulators are in good agreement with the experimental data. These results inspire confidence in extrapolating to higher bandwidths and other SSD configurations that may be suitable for ICF experiments and ultimately for direct-drive laser-fusion ignition.
© 2000 Optical Society of America
(030.6140) Coherence and statistical optics : Speckle
(030.6600) Coherence and statistical optics : Statistical optics
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3610) Lasers and laser optics : Lasers, ultraviolet
(350.2660) Other areas of optics : Fusion
Sean P. Regan, John A. Marozas, John H. Kelly, Thomas R. Boehly, William R. Donaldson, Paul A. Jaanimagi, Robert L. Keck, Terrance J. Kessler, David D. Meyerhofer, Wolf Seka, Stanley Skupsky, and Vladimir A. Smalyuk, "Experimental investigation of smoothing by spectral dispersion," J. Opt. Soc. Am. B 17, 1483-1489 (2000)