A spot-shadowing technique to mitigate damage growth in a high-energy laser is studied. Its goal is to minimize the energy loss and undesirable hot spots in intermediate planes of the laser. A nonlinear optimization algorithm solves for the complex fields required to mitigate damage growth in the National Ignition Facility amplifier chain. The method is generally applicable to any large fusion laser.
© 2008 Optical Society of America
Lasers and Laser Optics
Original Manuscript: August 19, 2008
Manuscript Accepted: October 28, 2008
Published: December 5, 2008
Seung-Whan Bahk, Jonathan D. Zuegel, James R. Fienup, C. Clay Widmayer, and John Heebner, "Spot-shadowing optimization to mitigate damage growth in a high-energy-laser amplifier chain," Appl. Opt. 47, 6586-6593 (2008)