1 April 2001 Analysis of diffractive optical elements using a nonuniform finite-difference time-domain method
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Optical Engineering, 40(4), (2001). doi:10.1117/1.1355252
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.
Shouyuan Shi, Xiaodong Tao, Liuqing Yang, Dennis W. Prather, "Analysis of diffractive optical elements using a nonuniform finite-difference time-domain method," Optical Engineering 40(4), (1 April 2001). http://dx.doi.org/10.1117/1.1355252
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KEYWORDS
Finite-difference time-domain method

Diffractive optical elements

Lenses

Optical engineering

Near field

Binary data

Finite element methods

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