Accurate inverse design for high-efficiency and broadband terahertz devices by co-simulation with genetic algorithms

Ming Zhang; Junyao Zhang; Chaowei Cui; Peng Dong; Baozhu Wang; Lin Yang; Xiuqing Zhang; Xiuqing Zhang

doi:10.1364/JOSAB.496383

Journal of the Optical Society of America B
Vol. 40,
Issue 10,
pp. 2674-2683
(2023)
•https://doi.org/10.1364/JOSAB.496383

Accurate inverse design for high-efficiency and broadband terahertz devices by co-simulation with genetic algorithms

Ming Zhang, Junyao Zhang, Chaowei Cui, Peng Dong, Baozhu Wang, Lin Yang, and Xiuqing Zhang

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Ming Zhang, Junyao Zhang, Chaowei Cui, Peng Dong, Baozhu Wang, Lin Yang, and Xiuqing Zhang, "Accurate inverse design for high-efficiency and broadband terahertz devices by co-simulation with genetic algorithms," J. Opt. Soc. Am. B 40, 2674-2683 (2023)

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- Surface Optics
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About this Article
History
- Original Manuscript: May 24, 2023
- Revised Manuscript: September 14, 2023
- Manuscript Accepted: September 14, 2023
- Published: September 27, 2023

Abstract

In this study, we combined MATLAB with the rigorous electromagnetic field simulation software Computer Simulation Technology to perform a co-simulation method for inverse design of high-efficiency and broadband THz metasurface devices. In the proposed design method, genetic algorithm (GA) is embedded to realize automatic and inverse design. Aiming toward the different requirements of high-efficiency and broadband THz metasurface devices, different objective functions are set to optimize the design of different types of THz metasurface devices. Based on the rigorous electromagnetic simulation and genetic algorithm, the proposed design method can realize automatic and inverse design with high reliability, compared to the theoretical model based on catenary e-field theory. This study provides an important guiding role and an efficient method for designing and optimizing required metasurface devices with practical applied value.

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References	Frequency Range	Efficiency	Relative Bandwidth	Structures	Materials
[41] (2020)	1.77–4.16 (THz)	Over 90%	80.6%	monolayer	Graphene
[42] (2021)	1.5–3.0 (THz)	Over 90%	66%	monolayer	Graphene
This work	0.5–2.1 (THz)	Over 90%	123%	monolayer	Cr
[5](2018)	1.59–4.54 (THz)	Over 80%	90%	dual	Au, graphene
[35](2018)	0.52–4.4 (THz)	Over 90%	157%	dual	Cr
[8] (2023)	1.03–2.62 (THz)	Over 90%	87%	dual	${V O}_{2}$ , Au
This work	0.49–3.68 (THz)	Over 90%	153%	dual	Cr

References	Working Frequency	Center Frequency	Bandwidth (3 dB)	Relative Bandwidth	Materials
[43] (2018)	0.3–1.8 (THz)	1.0 THz	0.4 THz	72%	tin foil
[44] (2018)	0.2–1.4 (THz)	0.95 THz	0.2 THz	22%	tin foil
[45] (2019)	0–1.8 (THz)	0.724 THz	0.55 THz	72%	Au
[46] (2020)	0.1–0.6 (THz)	0.405 THz	0.16 THz	27%	Al
This work	0.1–2.2 (THz)	0.95 THz	1.06 THz	97%	Cu

References	Frequency Range	Efficiency	Relative Bandwidth	Materials
[47] (2015)	0.91–1.45 (THz)	Over 90%	45%	Au
[48] (2016)	8.3–14.3 (GHz)	Over 80%	53%	PEC
[49] (2019)	2.64–3.29 (THz)	Over 90%	21.9%	graphene
[50] (2019)	3.82–7.88 (THz)	Over 80%	70%	BDSs
[51] (2020)	1.38–1.85 (THz)	Over 90%	30%	graphene-metal
[52] (2021)	0.52–0.61 (THz)	Over 90%	16%	${V O}_{2}$
This work	0.69–1.52 (THz)	Over 90%	75%	Cu

References	Frequency Range	Efficiency	Relative Bandwidth	Structures	Materials
[41] (2020)	1.77–4.16 (THz)	Over 90%	80.6%	monolayer	Graphene
[42] (2021)	1.5–3.0 (THz)	Over 90%	66%	monolayer	Graphene
This work	0.5–2.1 (THz)	Over 90%	123%	monolayer	Cr
[5](2018)	1.59–4.54 (THz)	Over 80%	90%	dual	Au, graphene
[35](2018)	0.52–4.4 (THz)	Over 90%	157%	dual	Cr
[8] (2023)	1.03–2.62 (THz)	Over 90%	87%	dual	${V O}_{2}$ , Au
This work	0.49–3.68 (THz)	Over 90%	153%	dual	Cr

References	Working Frequency	Center Frequency	Bandwidth (3 dB)	Relative Bandwidth	Materials
[43] (2018)	0.3–1.8 (THz)	1.0 THz	0.4 THz	72%	tin foil
[44] (2018)	0.2–1.4 (THz)	0.95 THz	0.2 THz	22%	tin foil
[45] (2019)	0–1.8 (THz)	0.724 THz	0.55 THz	72%	Au
[46] (2020)	0.1–0.6 (THz)	0.405 THz	0.16 THz	27%	Al
This work	0.1–2.2 (THz)	0.95 THz	1.06 THz	97%	Cu

Abstract

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Figures (6)

Tables (3)

Equations (11)

Journal of the Optical Society of America B