We present preoptimization strategies for improving the design of diffractive lenses in the electromagnetic domain, with few or no electromagnetic analyses. We find that improvements can be substantial, in some cases even to the point that extensive electromagnetic optimization gives only marginal additional improvement.
© 2002 Optical Society of America
David M. Mackie, Dennis W. Prather, and Shouyan Shi, "Preoptimization improvements to subwavelength diffractive lenses," Appl. Opt. 41, 6168-6175 (2002)