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Efficient Rational Approximation of Optical Response Functions with the AAA Algorithm

delete2024-07-31
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OA
AI
F
Fridtjof Betz
M
Martin Hammerschmidt
L
Lin Zschiedrich
S
Sven Burger
F
Felix Binkowski *
DOI:10.1002/lpor.202400584delete
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Abstract

Abstract

En 中文
A theoretical framework for the rational approximation of optical response functions in resonant photonic systems is introduced. The framework is based on the AAA algorithm and further allows to solve the underlying nonlinear eigenproblems and to efficiently model sensitivities. An adaptive sampling strategy exploits the predominance of resonances in the physical response. A chiral metasurface is investigated and it is shown that the chiroptical response on parameter variations can be accurately modeled in the vicinity of the relevant resonance frequencies.
Keywords:
AAA algorithm
chiral metasurface
nanophotonics
rational approximation
resonances
sensitivities

Journal

L
Laser and Photonics Reviews
IF:
10
Papers:
3.7K
Citations:
2.1W

Organization

Zuse Institute Berlin cover
Zuse Institute Berlin
Scholars:
407
Papers: 345
Citations: 367