A GRADIENT-METHOD FOR DESIGN OF MULTIORDER VARIED-DEPTH BINARY DIFFRACTION GRATINGS

Authors
DOSKOLOVICH LL KHARITONOV SI PETROVA OI SOIFER VA
Citation
Ll. Doskolovich et al., A GRADIENT-METHOD FOR DESIGN OF MULTIORDER VARIED-DEPTH BINARY DIFFRACTION GRATINGS, Optics and lasers in engineering, 29(4-5), 1998, pp. 249-259
Citations number
14
Categorie Soggetti
Optics
Journal title
Optics and lasers in engineering → ACNP
ISSN journal
01438166
Volume
29
Issue
4-5
Year of publication
1998
Pages
249 - 259
Database
ISI
SICI code
0143-8166(1998)29:4-5<249:AGFDOM>2.0.ZU;2-Q
Abstract
A method for the design of perfectly conducting varied-depth binary di ffraction gratings is proposed. The design uses the rigorous modal exp ansion method and is based on the gradient search algorithm for optimi zation of grating structure from the condition of the generation of a desired array of diffraction orders. The designs of varied-depth binar y gratings with equal order intensities are reported with an efficienc y of more than 90% and root-mean square errors of 2-7%. (C) 1998 Elsev ier Science Ltd. All rights reserved.