Very efficient suboptimal algorithms for the design of phase-only filters and binary phase-only filters are presented. A reduction of 2- to 3-orders of magnitude in computer time is obtained over previous algorithms. The loss in signal-to-noise ratio is negligible (<0.001 dB).
Zouhir Bahri and B. V. K. Vijaya Kumar, "Fast algorithms for designing optical phase-only filters (POFs) and binary phase-only filters (BPOFs)," Appl. Opt. 29, 2992-2996 (1990)