Design and analysis of binary beam shapers using error diffusion

Abstract

An error diffusion algorithm is used to design binary pixelated beam shapers. Beam shapers based on pixels with transmission equal either to 0 or 1 can be synthesized with this deterministic algorithm to provide continuous intensity shaping after Fourier filtering. The capabilities of these shapers are studied for high-power lasers. A particular emphasis is placed on the influence of the feature size on the performance of the designed shapers, and it is shown that the transmission degradation is highly predictable for this algorithm. Simulations demonstrating the possibility of precompensating for feature size when designing intensity shapers are presented.