The performance characteristics of focusing diffractive mirrors designed with various methods are evaluated by using the rigorous boundary element method. Quantitative results are presented for (1) conventional-zero-thickness mirror designs, (2) alternative-zero-thickness designs that incorporate an off-axis correction factor and (3) finite-thickness designs. For TM polarization, the mirrors designed by using the alternative-zero-thickness method perform considerably worse than those designed by using the conventional-zero-thickness method, which contradicts predictions made in an earlier paper [J. Opt. Soc. Am. A <b>17</b>, 1132 (2000)].
© 2001 Optical Society of America
(050.1380) Diffraction and gratings : Binary optics
(050.1970) Diffraction and gratings : Diffractive optics
(220.2740) Optical design and fabrication : Geometric optical design
(220.3620) Optical design and fabrication : Lens system design
(260.2110) Physical optics : Electromagnetic optics
Jon M. Bendickson, Elias N. Glytsis, and Thomas K. Gaylord, "Focusing diffractive cylindrical mirrors: rigorous evaluation of various design methods," J. Opt. Soc. Am. A 18, 1487-1494 (2001)