The coupled-wave method formulated by Moharam and Gaylord [ J. Opt. Soc. Am. 73, 451 ( 1983)] is known to be slowly converging, especially for TM polarization of metallic lamellar gratings. The slow convergence rate has been analyzed in detail by Li and Haggans [ J. Opt. Soc. Am. A 10, 1184 ( 1993)], who made clear that special care must be taken when coupled-wave methods are used for TM polarization. By reformulating the eigenproblem of the coupled-wave method, we provide numerical evidence and argue that highly improved convergence rates similar to the TE polarization case can be obtained. The discussion includes both nonconical and conical mountings.
© 1996 Optical Society of AmericaFull Article | PDF Article
More Like This
J. Opt. Soc. Am. A 14(7) 1583-1591 (1997)
Lifeng Li and Charles W. Haggans
J. Opt. Soc. Am. A 10(6) 1184-1189 (1993)
J. Opt. Soc. Am. A 14(7) 1592-1598 (1997)