Binary subwavelength diffractive-lens design
Optics Letters, 1998•opg.optica.org
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.
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.
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.
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