Applications

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  1. Dinosaur Photonic Crystal Cavity Interfaces for Color Center Coupling to Triangular Nanostructures

    The authors introduced and optimized 'Dinosaur' photonic crystal cavities with triangular cross-sections to create efficient spin-photon interfaces for quantum information applications. JCMsuite was used to perform finite element method simulations for computing cavity eigenmodes, quality factors, and mode volumes. Its integrated Bayesian optimization toolkit was employed to maximize the cavity quality factor, and scattering simulations were conducted to determine the waveguide coupling efficiency of the designed structures.

    Julian M. Bopp, et al. Dinosaur Photonic Crystal Cavity Interfaces for Color Center Coupling to Triangular Nanostructures. arXiv:2510.26335 (2025).

    2025 DOI Publication link

    photonic crystals, quantum optics, Advanced Finite Element Methods, Light Scattering Computation, Optimization and Parameter Retrieval Methods, Resonance Mode Computation

  2. Exceptional Points and Lasing Thresholds: When Lower-Q Modes Win

    This work challenges the conventional rule that the highest‑Q mode always reaches the lasing threshold first under uniform gain. By studying non‑Hermitian degeneracies (exceptional points) in laser cavities, the authors show that lower‑quality‑factor modes can coalesce and accelerate toward threshold, surpassing initially more favorable modes. JCMsuite’s finite‑element solver was used to compute the quasi‑normal modes of a designed polygonal microcavity and to trace their complex‑frequency trajectories as gain is increased, thereby validating the predicted exceptional‑point‑induced mode switching.

    J. Kullig, et al. Exceptional Points and Lasing Thresholds: When Lower-Q Modes Win. Phys. Rev. Lett. 135, 173802 (2025).

    2025 DOI Publication link

    Light Sources, optical resonators and antennas, Light Scattering Computation, Resonance Mode Computation

  3. On-chip twisted hollow-core light cages: enhancing planar photonics with 3D nanoprinting

    This work introduces the concept of 3D-nanoprinted, on-chip twisted hollow-core light cages, which are novel integrated chiral waveguides. To analyze their optical properties and the origin of their strong circular dichroism, the modes of the infinitely extended twisted waveguide were calculated using the finite element method (FEM) in the helicoidal coordinate frame. These simulations were performed with JCMsuite, which natively supports calculations in helicoidal coordinates, allowing the authors to investigate twist-induced resonances and angular momentum coupling based on the waveguide's 2D cross-section.

    J. Bürger, et al. On-chip twisted hollow-core light cages: enhancing planar photonics with 3D nanoprinting. Adv. Photonics, 7, 046002 (2025).

    2025 DOI Publication link

    Optical Metrology and Sensing, integrated optics, optical chirality, optical resonators and antennas, Advanced Finite Element Methods, Resonance Mode Computation

  4. Scalar product for the radiation of resonant modes

    The authors propose a new cross-energy scalar product to normalize and compare resonant (quasi-normal) modes of optical resonators using their radiation fields. This method avoids the complications of divergent modal fields outside the resonator. The theory is applied to whispering gallery modes in a disk resonator, where JCMsuite's finite element method solver was used to compute the complex eigenfrequencies and spatial field profiles of the resonant modes, which are essential for evaluating the proposed scalar product.

    M. Paszkiewicz-Idzik, et al. Scalar product for the radiation of resonant modes. Phys. Rev. A 112, 013518 (2025).

    2025 DOI Publication link

    Optical Metrology and Sensing, integrated optics, optical resonators and antennas, Advanced Finite Element Methods, Resonance Mode Computation

  5. High Purcell enhancement in all-TMDC nanobeam resonators

    The authors propose an all-transition-metal-dichalcogenide (TMDC) nanobeam resonator with an active monolayer, designed to function as a high-β-factor nanolaser. A theoretical and computational framework for modeling and optimizing the Purcell enhancement was developed, based on a resonance expansion to resolve sharp spectral peaks from high-Q resonances. JCMsuite was used to perform the finite element method simulations of the 3D resonator and its resonance modes, and its Bayesian optimization tool was employed to maximize the Purcell enhancement under a Q-factor constraint.

    F. Binkowski, et al. High Purcell enhancement in all-TMDC nanobeam resonator designs with active monolayers for nanolasers. Phys. Rev. B 112, 235410 (2025).

    2025 DOI Publication link

    Light Sources, optical resonators and antennas, photonic crystals, Optimization and Parameter Retrieval Methods, Resonance Mode Computation

  6. Numerical study of high-temperature, disk-based tungsten and molybdenum thermophotovoltaic selective thermal emitters

    This work investigates the design of two-dimensional selective thermal emitters (STEs) made of tungsten or molybdenum disks with a hafnia spacer for thermophotovoltaic applications. A parametric analysis was performed to study the effect of geometry on the thermal emittance and to identify designs optimized for use with a GaSb photovoltaic cell. The spectral and angular emittance of the STEs, as well as the electromagnetic field distributions to identify resonant modes, were computed using the finite element method (FEM) in JCMsuite.

    G. Silva-Oelker, et al. Numerical study of high-temperature, disk-based tungsten and molybdenum thermophotovoltaic selective thermal emitters. Opt. Express, 33, 6953 (2025).

    2025 DOI Publication link

    Light Sources, Photovoltaics, Light Scattering Computation, Resonance Mode Computation

  7. 3D nanoprinted fiber-interfaced hollow-core waveguides for high-accuracy nanoparticle tracking analysis

    This work presents a novel fiber-integrated square-core hollow-core waveguide (HCW) fabricated via 3D nanoprinting, enabling high-precision nanoparticle tracking analysis (NTA) with near-aberration-free imaging. Finite element modeling (FEM) simulations performed with JCMsuite software were used to analyze the intensity distribution, polarization, and modal attenuation of leaky core modes within the HCW. The simulations provided critical insights into the guiding mechanism (anti-resonance effect), confirmed the high-purity excitation of the fundamental mode from the fiber, and aided in the design of the waveguide for optimal performance in NTA experiments.

    D. Pereira, et al. 3D nanoprinted fiber-interfaced hollow-core waveguides for high-accuracy nanoparticle tracking analysis. Light Sci. Appl. 14, 197 (2025).

    2025 DOI Publication link

    Optical Metrology and Sensing, Photonic Waveguides and Fibers, integrated optics, Light Scattering Computation, Resonance Mode Computation

  8. On-chip hollow-core waveguides with integrated anti-resonant channels, enabled by 3D nanoprinting

    This work introduces a novel three-channel on-chip hollow-core waveguide design operating via the anti-resonant effect. To analyze the modal behavior, inter-channel coupling, and polarization-dependent losses, detailed finite element method (FEM) simulations were performed using JCMsuite. The numerical simulations were essential for understanding the underlying physical principles and guided the experimental validation of the nanoprinted structures.

    D. Pereira, et al. On-chip hollow-core waveguides with integrated anti-resonant channels, enabled by 3D nanoprinting. Opt. Express, 33, 30136 (2025).

    2025 DOI Publication link

    Optical Metrology and Sensing, Photonic Waveguides and Fibers, integrated optics, Light Scattering Computation, Resonance Mode Computation

  9. Resonance modes in microstructured photonic waveguides: efficient and accurate computation based on AAA rational approximation

    This work presents a framework for the efficient and accurate computation of fundamental resonance modes in photonic waveguides, based on the AAA rational approximation. The method computes modes selectively, prioritizing those most relevant by applying specially chosen light sources, thereby avoiding the need to calculate many unwanted modes (e.g., cladding or higher-order modes). The approach was demonstrated by computing the fundamental mode of a hollow-core photonic crystal fiber, with numerical solutions obtained using the finite element solver JCMsuite.

    F. Binkowski, et al. Resonance modes in microstructured photonic waveguides: efficient and accurate computation based on AAA rational approximation. Nanophotonics 14, 1665 (2025).

    2025 DOI Publication link

    Photonic Waveguides and Fibers, optical resonators and antennas, photonic crystals, Light Scattering Computation, Resonance Mode Computation

  10. Numerical Investigation of a Coupled Micropillar – Waveguide System for Integrated Quantum Photonic Circuits

    This work presents the numerical design and optimization of a monolithic, on-chip single-photon source. The source consists of a whispering-gallery-mode micropillar laser evanescently coupled to a ridge waveguide containing a single quantum dot. The FEM solver JCMsuite was used to perform eigenmode and scattering simulations to optimize the device geometry, analyzing the impact of parameters like the pillar-waveguide gap distance and waveguide width on the coupling efficiency and resonator quality factor.

    L. J. Roche, et al. Numerical Investigation of a Coupled Micropillar – Waveguide System for Integrated Quantum Photonic Circuits. Adv. Quantum Technol., 7, 2400195 (2024).

    2024 DOI Publication link

    Light Sources, integrated optics, optical resonators and antennas, quantum optics, Advanced Finite Element Methods, Light Scattering Computation, Resonance Mode Computation

  11. 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

  12. 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

  13. 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

  14. 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

  15. Correlated Disorder Substrate-Integrated Nanodisk Scatterers for Light Extraction in Organic Light Emitting Diodes

    The waveguide mode loss of the layer stack in an OLED is investigated via numerical analysis with JCMsuite. To improve this type of loss, an OLED with nanodisk scatterers integrated into the substrate is presented, numerically investigated, and discussed.

    P. M. Piechulla, et al., Correlated Disorder Substrate-Integrated Nanodisk Scatterers for Light Extraction in Organic Light Emitting Diodes. Advanced Optical Materials, 11, 2202557 (2023).

    2023 DOI Publication link

    Light Sources, optical resonators and antennas, Light Scattering Computation, Resonance Mode Computation

  16. 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

  17. 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

  18. Uniform Huygens Metasurfaces with Postfabrication Phase Pattern Recording Functionality

    A novel way for the design and the fabrication of phase-gradient Huygens metasurfaces, which uses laser-annealing of uniform particles made of As_2S_3 glass, is presented. Within the design process, numerical simulations are performed with JCMsuite to compute the reflection, transmission, and positions of poles and zeros.

    E. Mikheeva, et al., Uniform Huygens Metasurfaces with Postfabrication Phase Pattern Recording Functionality. ACS Photonics, 10, 1538–1546 (2023).

    2023 DOI Publication link

    Metamaterials, Light Scattering Computation, Resonance Mode Computation

  19. High-performance designs for fiber-pigtailed quantum-light sources based on quantum dots in electrically-controlled circular Bragg gratings

    A surrogate model combined with a Bayesian optimization approach to perform numerical optimization of the coupling from a hybrid circular Bragg grating to a fiber is presented. Resonance mode and scattering simulations are performed within JCMsuite where parameters such as the Purcell factor, the fiber coupling efficiency, and the collection efficiency are determined.

    L. Rickert, et al., High-performance designs for fiber-pigtailed quantum-light sources based on quantum dots in electrically-controlled circular Bragg gratings. Opt. Express 31, 14750-14770 (2023).

    2023 DOI Publication link

    Light Sources, integrated optics, optical resonators and antennas, Resonance Mode Computation