Applications
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Optimizing Aesthetic Appearance of Perovskite Solar Cells Using Color Filters
This study optimizes the color appearance of perovskite solar cells by integrating them with MorphoColor interference filters. The researchers used Bayesian optimization (implemented with JCMwave’s commercial software) to adapt the filter design, minimizing the color distance between the combined stack and the target aesthetic appearance. The optimization allowed tailoring of the bridging layers, achieving both a desired green color and improved photocurrent in the solar cell.
J. Schaible, et al. Optimizing Aesthetic Appearance of Perovskite Solar Cells Using Color Filters. Sol. RRL, 2400627 (2024).
2024 DOI Publication link
Photovoltaics, diffractive optics, Optimization and Parameter Retrieval Methods
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Poles and zeros in non-Hermitian systems: Application to photonics
The authors present a contour-integration-based framework for computing poles and zeros of electromagnetic response functions in non-Hermitian photonic systems. They demonstrate the approach on a dielectric metasurface, determining complex-valued reflection zeros and poles, their sensitivities to geometric parameters, and performing residue-based modal expansions. The numerical simulations were performed using the finite-element Maxwell solver JCMsuite to solve scattering problems at complex frequencies along integration contours.
F. Binkowski et al. Poles and zeros in non-Hermitian systems: Application to photonics. Phys. Rev. B 109, 045414 (2024).
2024 DOI Publication link
Metamaterials, diffractive optics, optical resonators and antennas, Advanced Finite Element Methods, Resonance Mode Computation
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Sawfish Photonic Crystal Cavity for Near-Unity Emitter-to-Fiber Interfacing in Quantum Network Applications
A novel "Sawfish" photonic crystal cavity design is proposed for interfacing solid-state quantum emitters, specifically tin vacancy centers in diamond, with optical fibers for quantum network applications. The design was optimized to maximize the Purcell-enhanced emission coupling efficiency and adiabatic mode conversion from the nanocavity into a single-mode fiber. Full 3D finite element method (FEM) simulations and Bayesian optimization performed with JCMsuite were used to design and optimize the cavity, waveguide, and fiber coupling geometry, and to analyze its robustness to fabrication tolerances using surrogate modeling.
J. M. Bopp, et al. Sawfish Photonic Crystal Cavity for Near-Unity Emitter-to-Fiber Interfacing in Quantum Network Applications. Adv. Optical Mater. 12, 2301286 (2024).
2024 DOI Publication link
optical resonators and antennas, photonic crystals, quantum optics, Light Scattering Computation, Optimization and Parameter Retrieval Methods
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Separating Material and Geometry Contributions to Circular Dichroism of Chiral Objects
This study developed a multi-scale computational approach to disentangle the contributions of geometry and material chirality to the circular dichroism (CD) of chiral objects. The researchers used JCMsuite to perform full-wave finite element simulations, extracting transition matrices to compute the optical response of objects like helices and tetrahedral sphere arrangements. This enabled the separation of CD into geometry- and material-dependent parts, showing that their linear superposition accurately predicts total CD, even for resonant systems.
L. Rebholz, et al. Separating the Material and Geometry Contribution to the Circular Dichroism of Chiral Objects Made from Chiral Media. ACS Photonics. 11, 1171-1179 (2024).
2024 DOI Publication link
Metamaterials, Optical Metrology and Sensing, optical chirality, Advanced Finite Element Methods
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Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching
This work investigates dielectric optical waveguides designed to suppress lateral leakage of TM-polarized modes, a common issue in standard rib waveguides with shallow etching. The proposed "plus-shaped" waveguide achieves this by using a vertically symmetric core structure. JCMsuite's fully vectorial finite-element eigensolver was used to compute and validate the modal properties, confirming the absence of leakage and loss for these symmetry-protected TM modes.
N. Üstün, et al. Symmetry-protected TM modes in rib-like, plus-shaped optical waveguides with shallow etching. J. Opt. Soc. Am. B, 41, 2077 (2024).
2024 DOI Publication link
Photonic Waveguides and Fibers, integrated optics, Light Scattering Computation, Resonance Mode Computation
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Core-Shell Nanoparticle Resonances in Near-Field Microscopy Revealed by Fourier-demodulated Full-wave Simulations
This work presents a detailed investigation of the near-field optical response of core-shell nanoparticles using Fourier-demodulated full-wave simulations. The authors employed JCMsuite to simulate the scattering-type scanning near-field optical microscopy (s-SNOM) measurement process for cylindrically symmetric samples. These simulations, which closely mimic the experimental procedure, were used to explore the complex interplay of geometrical and optical resonances within core-shell nanostructures, revealing significant resonance shifts and enhanced scattering effects.
D. Dai, et al. Core-Shell Nanoparticle Resonances in Near-Field Microscopy Revealed by Fourier-demodulated Full-wave Simulations. Nano Letters, 24(43), 13747 (2024).
2024 DOI Publication link
Optical Metrology and Sensing, plasmonics, Advanced Finite Element Methods, Light Scattering Computation
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GaAs-on-insulator ridge waveguide nanobeam cavities with integrated InAs quantum dots
This work investigates the design, fabrication, and optical characterization of nanobeam cavities on a GaAs-on-insulator platform with integrated InAs quantum dots for quantum photonic applications. JCMsuite was used to perform numerical simulations to optimize the cavity geometry, including the dimensions and periodicity of elliptical holes. These simulations predicted a high photon coupling efficiency of nearly 70% and a Purcell factor of approximately 28 for the optimized structure.
Y. Zhou, et al. GaAs-on-insulator ridge waveguide nanobeam cavities with integrated InAs quantum dots. Mater. Quantum. Technol. 4, 025403 (2024).
2024 DOI Publication link
Light Sources, integrated optics, optical resonators and antennas, quantum optics, Advanced Finite Element Methods, Propagation Mode Computation
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Proposal for a Tunable Room-Temperature Single-Photon Source Based on a Plasmonic Nanoantenna Driven by Inelastic Tunneling
This work proposes a novel nanoantenna design for generating single photons at room temperature via inelastic tunneling in the Coulomb blockade regime. The proposed "SelfSiM" (Self-Similar nanoparticle on Mirror) antenna merges concepts from nanoparticle-on-mirror and self-similar antennas to simultaneously boost the local density of optical states and achieve efficient photon outcoupling. The authors used JCMsuite to perform 3D finite-element method (FEM) simulations of Maxwell's equations, analyzing the antenna's Purcell factor, radiative efficiency, and eigenmodes to validate and optimize the design.
G. Kewes and O. Benson. Proposal for a Tunable Room‐Temperature Single‐Photon Source Based on a Plasmonic Nanoantenna Driven by Inelastic Tunneling in the Coulomb Regime. Phys. Status Solidi A, 221, 2300366 (2024).
2024 DOI Publication link
Light Sources, optical resonators and antennas, plasmonics, quantum optics, Advanced Finite Element Methods, Light Scattering Computation, Resonance Mode Computation
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Imaging Mueller matrix ellipsometry measurements on measuring fields in the micrometre range
An imaging Mueller matrix ellipsometer is used to measure nanoscale line and grating structures in micron-sized measurement fields. To reconstruct the structural parameters from the ellipsometric data, numerical simulations using the finite element method were performed. The commercial FEM Maxwell solver JCMwsuite was employed to solve the inverse diffraction problem and to fit the measured Mueller matrix images by varying the simulation parameters in an optimization process.
J. Grundmann, et al. Imaging Mueller matrix ellipsometry measurements on measuring fields in the micrometre range. EPJ Web of Conferences 309, 02010 (2024).
2024 DOI Publication link
Optical Metrology and Sensing, Optical and EUV Lithography, Advanced Finite Element Methods, Optimization and Parameter Retrieval Methods
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Comprehensive assessment of terahertz quantum-cascade lasers performance characteristics
The authors present a comprehensive method to characterize the electrical, optical, and thermal performance of terahertz quantum-cascade lasers (THz QCLs). To analyze the laser waveguides and decouple the influence of different resonator parameters, the optical waveguide losses were calculated using JCMsuite's finite element method solver. The simulation of a two-dimensional waveguide cross-section was essential for determining the intrinsic waveguide loss and effective refractive index, which were used to separate the contributions of transparency current and various optical losses to the laser threshold.
V. Pistore, et al. Comprehensive assessment of terahertz quantum-cascade lasers performance characteristics. J. Appl. Phys. 136, 194506 (2024).
2024 DOI Publication link
Light Sources, optical resonators and antennas, Light Scattering Computation, Propagation Mode Computation
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Crossing of the Branch Cut: The Topological Origin of a Universal 2Pi-Phase Retardation in Non-Hermitian Metasurfaces
Poles and zeros are computed with JCMsuite to generate a basic understanding of how to engineer electromagnetic fields at material interface e.g. metasurfaces. This knowledge can be used to generate full wavefront control of optical components which require spatial phase modulation of incoming beams with a phase from 0 to 2 pi.
R. Colom, et al. Crossing of the Branch Cut: The Topological Origin of a Universal 2𝝅-Phase Retardation in Non-Hermitian Metasurfaces. Laser & Photonics Reviews, 17, 2200976 (2023).
2023 DOI Publication link
Metamaterials, integrated optics, Advanced Finite Element Methods, Light Scattering Computation
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Applying a Riesz-projection-based contour integral eigenvalue solver to compute resonance modes of a VCSEL
Resonance modes of a VCESEL are computed with a contour integral method that uses physical right-hand sides, the so-called Riesz projection eigenvalue solver. A study of the numerical parameters of the integration contour and different physical sources is presented, where scattering simulations are performed with JCMsuite.
L. Kuen, Applying a Riesz-projection-based contour integral eigenvalue solver to compute resonance modes of a VCSEL. Proc. SPIE 12575, Integrated Optics: Design, Devices, Systems and Applications VII, 125750J (31 May 2023).
2023 DOI Publication link
Light Sources, optical resonators and antennas, Resonance Mode Computation
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A T-Matrix Based Approach to Homogenize Artificial Materials
The computation of new materials as 3D lattices poses a large computational effort. Here, a homogenization method based on the effective transition matrix is introduced for efficient analysis. A combination with quantum-chemical and Maxwell solvers allows us to efficiently compute the response of arbitrarily-shaped volumetric patchworks of structured molecular materials and metamaterials.
B. Zerulla, et al., A T-Matrix Based Approach to Homogenize Artificial Materials. Adv. Optical Mater., 11, 2201564 (2023).
2023 DOI Publication link
Metamaterials, Light Scattering Computation
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Resonance Expansion of Quadratic Quantities with Regularized Quasinormal Modes
In this paper, the resonance expansion of quadratic quantities is resented and applied to a circular Bragg grating resonator. Therefore the Riesz Projection method is applied and the electromagnetic field is described via quasinormal modes, the fields and quantities are computed with JCMsuite.
F. Betz, et al. Resonance Expansion of Quadratic Quantities with Regularized Quasinormal Modes. Physica status solidi (a), 220, 2200892 (2023).
2023 DOI Publication link
Light Sources, optical resonators and antennas, Resonance Mode Computation, other methods
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Universal design method for bright quantum light sources based on circular Bragg grating cavities
An efficient design scheme of quantum light sources based on hybrid circular Bragg grating with and without contact bridges is developed. Within the publication, JCMsuite is used to evaluate the optimized structures and to compute for example the extraction efficiency.
H.-W. Shih, et al., Universal design method for bright quantum light sources based on circular Bragg grating cavities. Opt. Express, 31, 35552-35564, 2023.
2023 DOI Publication link
Light Sources, optical resonators and antennas, quantum optics, Resonance Mode Computation
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Impact study of numerical discretization accuracy on parameter reconstructions and model parameter distributions
A Bayesian target vector optimization method is fit to a finite element numerical model (JCMsuite) to a Grazing Incidence X-ray fluorescence data set to obtain the geometrical parameters of line gratin within the nanometer range. Convergence studies are performed to determine the numerical parameters that allow for an efficient and accurate reconstruction of the model parameters.
M. Plock, et al., Impact study of numerical discretization accuracy on parameter reconstructions and model parameter distributions. Metrologia, 60, 054001, 2023.
2023 DOI Publication link
Optical Metrology and Sensing, Optical and EUV Lithography, integrated optics, Optimization and Parameter Retrieval Methods
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Universal Active Metasurfaces for Ultimate Wavefront Molding by Manipulating the Reflection Singularities
An innovative design strategy for active metasurfaces, relying on the position of topological singularities to address full phase modulation of light with almost unity efficiency is presented. The metasurfaces consist of asymmetric Gires–Tournois resonators and their optical properties are computed with JCMsuite.
M. Elsawy, et al. Universal Active Metasurfaces for Ultimate Wavefront Molding by Manipulating the Reflection Singularities. Laser & Photonics Reviews, 17, 2200880 (2023).
2023 DOI Publication link
Metamaterials, integrated optics, optical resonators and antennas, Light Scattering Computation
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Forward simulation of coherent beams on grating structures for coherent scatterometry
A coherent illumination model for scattering of focused beams such as Gaussian- and Bessel beams by periodic structures such as line gratings is presented. The model is then compared with strategies implemented on large-scale super-cells and inverse Floquet-transform strategies to superimpose both near- and far fields coherently.
M. Hammerschmidt, et al. Forward simulation of coherent beams on grating structures for coherent scatterometry. Proc. SPIE PC12619, PC1261907 (2023).
2023 DOI Publication link
diffractive optics, Advanced Finite Element Methods, Light Scattering Computation
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Inverse Design of a Hybrid Mie-Tamm Photonic Structure as a Highly Directional Gigahertz Single-Photon Source
A highly directional Gigahertz single-photon source, based on the concept of a hybrid Mie-Tamm resonance is presented. JCMsuit is applied for the parameter optimization, herein geometric properties and the dipole position are studied.
J.M. Llorens, et al., Inverse Design of a Hybrid Mie-Tamm Photonic Structure as a Highly Directional Gigahertz Single-Photon Source. Phys. Rev. Applied, 19, 034054 (2023).
2023 DOI Publication link
Light Sources, Light Scattering Computation