Binary subwavelength diffractive-lens design.
We present a procedure for the design of binary diffractive lenses with pulse-width-modulated subwavelength features. The procedure is based on the combination of two approximate theories, effective medium theory and scalar diffraction theory, and accounts for limitations on feature size and etch depth imposed by fabrication. A design example is presented.
Mait
J N
JN
Prather
D W
DW
Mirotznik
M S
MS