Article (Scientific journals)
Thickness optimization algorithm to improve multilayer diffractive optical elements performance
Laborde, Victor; Loicq, Jerôme; Hastanin, Juriy et al.
2023In Applied Optics, 62 (3), p. 836
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Keywords :
Atomic and Molecular Physics, and Optics; Engineering (miscellaneous); Electrical and Electronic Engineering
Abstract :
[en] The diffractive zone thicknesses of conventional diffractive optical elements (DOEs) are generally obtained using the thin element approximation (TEA). However, the TEA yields inaccurate results in the case of thick multilayer DOEs (MLDOEs). The extended scalar theory (EST) is an alternative thickness optimization method that depends on the diffractive order and the optimization wavelength. We developed an algorithm to research suitable EST input parameters. It combines ray-tracing and Fourier optics to provide a performance estimate for each EST parameter pair. The resulting “best” MLDOE designs for three different material combinations are analyzed using rigorous finite-difference time-domain. Compared to the TEA, the proposed algorithm can provide performing zone thicknesses.
Disciplines :
Physics
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Laborde, Victor ;  Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège)
Loicq, Jerôme  ;  Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège) ; Delft University of Technology
Hastanin, Juriy ;  Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège)
Habraken, Serge  ;  Université de Liège - ULiège > Centres généraux > CSL (Centre Spatial de Liège)
Language :
English
Title :
Thickness optimization algorithm to improve multilayer diffractive optical elements performance
Publication date :
20 January 2023
Journal title :
Applied Optics
ISSN :
1559-128X
eISSN :
2155-3165
Publisher :
Optica Publishing Group
Volume :
62
Issue :
3
Pages :
836
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 23 January 2023

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