Conference paper
Topology-optimized broadband surface relief transmission grating
We propose a design methodology for systematic design of surface relief transmission gratings with optimized diffraction efficiency. The methodology is based on a gradient-based topology optimization formulation along with 2D frequency domain finite element simulations for TE and TM polarized plane waves.
The goal of the optimization is to find a grating design that maximizes diffraction efficiency for the -1st transmission order when illuminated by unpolarized plane waves. Results indicate that a surface relief transmission grating can be designed with a diffraction efficiency of more than 40% in a broadband range going from the ultraviolet region, through the visible region and into the near-infrared region.
Language: | English |
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Publisher: | SPIE |
Year: | 2014 |
Pages: | 898006-898006-10 |
Proceedings: | Physics and Simulation of Optoelectronic Devices XXII |
ISBN: | 0819498939 and 9780819498939 |
ISSN: | 1996756x , 0277786x , 24109045 and 16057422 |
Types: | Conference paper |
DOI: | 10.1117/12.2036997 |
ORCIDs: | Sigmund, Ole |