Share Email Print

Optical Engineering

Analysis of diffractive optical elements using a nonuniform finite-difference time-domain method
Author(s): Shouyuan Shi; Xiaodong Tao; Liuqing Yang; Dennis W. Prather
Format Member Price Non-Member Price
PDF $20.00 $25.00

Paper Abstract

We present the analysis of diffractive optical elements (DOEs) using a two-dimensional nonuniform finite-difference time- domain (FDTD) method. Because the feature sizes in a DOE profile are in general irregular, their analysis using a conventional formulation of the FDTD, i.e., a uniform orthogonal grid, typically requires a high spatial sampling. This in turn raises the computational time and memory requirements for analysis. However, by using a nonuniform grid configuration one can more accurately represent the computation boundary of the DOE, and consequently reduce computational costs. To this end we apply our method to the analysis of both multilevel and subwavelength DOEs to illustrate its utility.

Paper Details

Date Published: 1 April 2001
PDF: 8 pages
Opt. Eng. 40(4) doi: 10.1117/1.1355252
Published in: Optical Engineering Volume 40, Issue 4
Show Author Affiliations
Shouyuan Shi, Univ. of Delaware (United States)
Xiaodong Tao, Univ. of Delaware (United States)
Liuqing Yang, Univ. of Delaware (United States)
Dennis W. Prather, Univ. of Delaware (United States)

© SPIE. Terms of Use
Back to Top