Focusing diffractive cylindrical mirrors: rigorous evaluation of various design methods.
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.
Bendickson
J M
JM
School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta 30332, USA.
Glytsis
E N
EN
Gaylord
T K
TK