We present a new technique for the design of diffractive optical elements (DOE’s) that is based on previous nonlinear least squares (NLS) and phase-shifting quantization methods [Appl. Opt. <b>36,</b> 7297–7306 (1997)]. The technique uses a memory-matrix-based identification (MMBI) optimization procedure. We compare results from the MMBI method with those from iterative Fourier transform and NLS methods. In comparison, the MMBI DOE designs produce better-quality reconstructions for DOE’s with eight or more fabrication phase levels and generally have a higher signal-to-noise ratio and better uniformity.
© 2000 Optical Society of America
(050.1970) Diffraction and gratings : Diffractive optics
(070.4560) Fourier optics and signal processing : Data processing by optical means
(100.5090) Image processing : Phase-only filters
(200.2610) Optics in computing : Free-space digital optics
(200.4650) Optics in computing : Optical interconnects
Dhawat E. Pansatiankul and Alexander A. Sawchuk, "Diffractive Optical Element Design with Memory-Matrix-Based Identification Methodology," Appl. Opt. 39, 5921-5928 (2000)