Abstract
A three-dimensional combined vectorial method, which is based on the finite-difference time-domain algorithm and vectorial diffraction formulation, is introduced to analyze the interaction of a realistic focused beam with a metallic grating in an optical storage system. The diffracted field patterns and the detected signals are calculated for gratings with different geometries, and the polarization-dependent characteristics are studied. The combined method can give accurately the detected signals and the field pattern at any desired position of the optical storage system.
© 2004 Optical Society of America
Full Article | PDF ArticleMore Like This
Justin B. Judkins and Richard W. Ziolkowski
J. Opt. Soc. Am. A 12(9) 1974-1983 (1995)
Wei-Chih Liu and Marek W. Kowarz
Appl. Opt. 38(17) 3787-3797 (1999)
Zhimin Shi, Jian-Jun He, and Sailing He
J. Opt. Soc. Am. A 21(7) 1198-1206 (2004)