TY - RPRT TI - Preoptimization improvements to subwavelength diffractive lenses. AU - David M Mackie AU - Dennis W Prather AU - Shouyan Shi PY - 2002 DO - 10.1364/ao.41.006168 UR - https://pubmed.ncbi.nlm.nih.gov/12389985/ ID - 12389985 ER -