Applications
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Near-unity Efficiency in Ridge Waveguide-based, On-chip Single-photon Sources
In this paper, a design for pursuing a near-unity coupling efficiency in quantum dot cavity ridge waveguide single-photon sources is presented. Simulations are performed to achieve constructive interference and low scattering losses within the cavity and to overcome the issue of the mode mismatch of the cavity and the Bloch mode in the nanobeam.
Y. J. Wang et al. Near-unity efficiency in ridge waveguide-based, on-chip single-photon sources. Mater. Quantum. Technol. 2.4 (2022).
2022 DOI Publication link
Light Sources, optical resonators and antennas, quantum optics, Resonance Mode Computation
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Machine learning enhanced in situ electron beam lithography of photonic nanostructures
Pattern recognition based on specifically trained machine learning algorithms is applied to strongly enhance the capabilities of in-situ electron beam lithography. This is applied to integrate single InGaAs quantum dots into circular Bragg grating resonators, with an optimized device design derived using JCMsuite.
J. Donges et al. Machine learning enhanced in situ electron beam lithography of photonic nanostructures. Nanoscale 14, 14529 (2022).
2022 DOI Publication link
Light Sources, integrated optics, optical resonators and antennas, quantum optics, Optimization and Parameter Retrieval Methods
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Numerical optimization of single-mode fiber-coupled single-photon sources based on semiconductor quantum dots
Fiber-coupled single-photon sources emitting in the near-infrared, O- and C-band are designed for high photon coupling efficiencies. Extensive numerical simulations and optimizations with JCMsuite are performed to maximize the photon extraction and fiber-coupling efficiency of quantum dot single-photon sources based on micro mesas, microlenses, circular Bragg grating cavities, and micropillars.
L. Bremer, et al. Numerical optimization of single-mode fiber-coupled single-photon sources based on semiconductor quantum dots. Opt. Express 30, 15913-15928 (2022)
2022 DOI Publication link
Light Sources, quantum optics, Light Scattering Computation, Optimization and Parameter Retrieval Methods
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Bayesian Target-Vector Optimization for Efficient ParameterReconstruction
In this paper, a Bayesian target-vector optimization scheme, specialized for parameter reconstruction problems with hundreds of observations is presented. The performance is compared to established methods for an optical metrology problem and two least-square problems.
M. Plock, et al. Bayesian Target-Vector Optimization for Efficient ParameterReconstruction. Advanced Theory and Simulations, 5, 2200112 (2022).
2022 DOI Publication link
Optical Metrology and Sensing, Optimization and Parameter Retrieval Methods, Uncertainty Quantification Methods
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Onset of Chirality in Plasmonic Meta-Molecules and Dielectric Coupling
In this paper, artificial meta-molecules are assembled using DNA origami arranging metallic nano-spheres. The CD signals of experiment and theory are in good agreement, a sign flip of the CD can be achieved for the addition or removal of single particles within the molecules.
K. Martens, et al. Onset of Chirality in Plasmonic Meta-Molecules and Dielectric Coupling. ACS Nano, 16, 16143-16149, (2022).
2022 DOI Publication link
optical chirality, plasmonics, Light Scattering Computation
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Eigenfrequency sensitivities using Riesz projections for efficient optimization of nanophotonic resonators
The Riesz projection method allows to efficiently compute the eigenfrequency sensitivities of resonance problems. These are then used to optimize a nano resonator in terms of Q-factor, where the required scattering solutions are computed with the FEM method of JCMsuite.
F. Binkowski, et al. Computation of eigenfrequency sensitivities using Riesz projections for efficient optimization of nanophotonic resonators. Commun. Phys. 5, 202 (2022).
2022 DOI Publication link
optical resonators and antennas, Advanced Finite Element Methods, Optimization and Parameter Retrieval Methods, Resonance Mode Computation
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Extraction of Silver Losses at Cryogenic Temperatures through the Optical Characterization of Silver-coated Plasmonic Nanolasers
The silver losses in the range 10 K-180 K are reported by performing temperature-dependent micro-photoluminescence measurements in conjunction with numerical simulations on silver-coated nanolasers around near-infrared telecommunication wavelengths using JCMsuite.
A. Koulas-Simos, et al. Extraction of silver losses at cryogenic temperatures through the optical characterization of silver-coated plasmonic nanolasers. Opt. Express, 30, 21664 (2022).
2022 DOI Publication link
optical resonators and antennas, other fields, Resonance Mode Computation
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Latent Image Characterization by Spectroscopic Reflectometry in the Extreme Ultraviolet
The application of spectroscopic EUV reflectometry for characterizing the latent image of a line grating is investigated. Numerical simulations with JCMsuite are performed to compute the reflectance of latent images of line gratings and simulations to analyze latent image gratings with a surface topography.
S. Schröder, et al. Latent image characterization by spectroscopic reflectometry in the extreme ultraviolet. J Micro Nanolithogr MEMS MOEMS, 21, 021208-021208 (2022).
2022 DOI Publication link
Optical and EUV Lithography, integrated optics, Light Scattering Computation
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Tripling the Light Extraction Efficiency of a Deep Ultraviolet LED Using a Nanostructured p-Contact
An ultraviolet LED with a new structure, that overcomes the low light extrection efficiency due to highliy absorbing p-contacts is presented. The structure is analysed via numerical simulations of the LEE and the normalized emitted power into the substrate.
E. Lopez-Fraguas, et al. Tripling the light extraction efficiency of a deep ultraviolet LED using a nanostructured p-contact. Sci Rep 12, 11480 (2022).
2022 DOI Publication link
Light Sources, Light Scattering Computation
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Compact Plug and Play Optical Frequency Reference Device Based on Doppler-free Spectroscopy of Rubidium Vapor
A standalone plug-and-play optical frequency reference device based on frequency modulation spectroscopy of the D2-transition in rubidium at 780 nm is presented. The Bayesian optimizer from JCMsuite is used to demonstrate a short-term frequency stability improvement by varying the modulation parameters.
A. Strangerfeld, et al. Compact plug and play optical frequency reference device based on Doppler-free spectroscopy of rubidium vapor. Opt. Express, 30, 12039-12047, (2022).
2022 DOI Publication link
other fields, quantum optics, Optimization and Parameter Retrieval Methods
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Chiral Plasmonic Films with Dynamic Tunability and Moldability
In this work, chiral nanocomposites are designed and fabricated for thin films sustaining plasmonic circular dichroism. Simulations using the T-matrix approach are performed with JCMsuite, to analyze the behavior of the plasmonic circular dichroism. The simulations show good agreement with the measurements.
D. Grzelak, et al. Liquid crystal templated chiral plasmonic films with dynamic tunability and moldability. Adv. Funct. Mater. 32, 2111280 (2022).
2022 DOI Publication link
optical chirality, plasmonics, Light Scattering Computation
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Electromagnetically Chiral Scatterers at Optical Frequencies
The CD of Silver helices within Milli-Q water is measured at discrete frequencies from far infrared to the optical band. The em-chirality of the helices is optimized with JCMsuite by combining the shape derivatives for the T-matrices with the Bayesian optimization algorithm.
X. Garcia-Santiago, et al. Toward Maximally Electromagnetically Chiral Scatterers at Optical Frequencies. ACS Photonics 9, 1954 (2022).
2022 DOI Publication link
optical chirality, plasmonics, Optimization and Parameter Retrieval Methods
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Scan-Free GEXRF in the Soft X-ray Range for the Investigation of Structured Nanosamples
In this work, scan-free GEXRF is applied in proof-of-concept measurements for the investigation of lateral ordered 2D nanostructures in the soft X-ray range. The numerical simulations with JCMsuite and the measurements from BESSY II synchrotron radiation facility are in excellent agreement.
S. Staeck, et al. Scan-Free GEXRF in the Soft X-ray Range for the Investigation of Structured Nanosamples. Nanomaterials, 12, 3766 (2022).
2022 DOI Publication link
Optical Metrology and Sensing, Light Scattering Computation
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Colloidal Titanium Nitride Nanobars for Broadband Inexpensive Plasmonics and Photochemistry from Visible to Mid-IR Wavelengths
The fabrication of titanium nitride (TiN) nano bars obtained using a two-step procedure based on a wet chemical route synthesis of TiO 2 nanowires and their subsequent high-temperature annealing in ammonia flow are presented. Electromagnetic simulations of the resulting TiN nano bars reveal a rich set of optical resonances featuring transverse, longitudinal, and mixed transverse–longitudinal plasmonic modes that cover energies from the visible to MIR region.
S. Rej, et al. Colloidal titanium nitride nanobars for broadband inexpensive plasmonics and photochemistry from visible to mid-IR wavelengths. Nano Energy, 104, 107989, (2022).
2022 DOI Publication link
optical chirality, plasmonics, Light Scattering Computation
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Chiral Bioinspired Plasmonics: A Paradigm Shift for Optical Activity and Photochemistry
The authors review the topic of chiral bioinspired plasmonics. The topics to be considered include polarization-sensitive photocatalysis with chiral plasmonic NCs, chiral bioconjugates, DNA-based assemblies, and chiral growth. Furthermore, the fundamental challenges for optical induction of chirality, transfer of chirality between different scales, and theoretical issues that nanoscience is discussed.
O. Ávalos-Ovando, et al. Chiral Bioinspired Plasmonics: A Paradigm Shift for Optical Activity and Photochemistry. ACS Photonics, 9, 2219–2236 (2022).
2022 DOI Publication link
optical chirality, plasmonics, Light Scattering Computation
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Locally Structured On-Chip Optofluidic Hollow-Core Light Cages for Single Nanoparticle Tracking
A waveguide system, which is locally structured to form on-chip optofluidic hollow-core light cages, is presented as a novel platform for waveguide-assisted nanoparticle tracking analysis. The mode behavior within the novel light cage is analyzed via measurements as well as simulations with JCMsuite.
J. Kim, et al. Locally structured on-chip optofluidic hollow-core light cages for single nanoparticle tracking. ACS sensors 7, 2951 (2022).
2022 DOI Publication link
integrated optics, Light Scattering Computation, Resonance Mode Computation
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Optical and Spin Properties of NV Center Ensembles in Diamond Nano-Pillars
The fabrication of nano-pillars with diameters up to 1000 nm by electron beam lithography and inductively coupled plasma reactive ions are used to build NV centers. The effect on the fluorescence into the objective is analyzed via simulations of the electromagnetic field using JCMsuite.
K. Volkova, et al. Optical and Spin Properties of NV Center Ensembles in Diamond Nano-Pillars. Nanomaterials, 12, 1516, (2022).
2022 DOI Publication link
integrated optics, optical resonators and antennas, quantum optics, Light Scattering Computation
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Nanostructured Materials for Circular Dichroism and Chirality at the Nanoscale: Towards Unconventional Characterization
A review of the last attempts to use nanostructured materials for the enhancement of the chiro-optical effects at the nanoscale is presented. It can be noted a separate branch of nanophotonic design which focuses on near-field chirality for sensing applications.
E. Petronijevic, et al. Nanostructured materials for circular dichroism and chirality at the nanoscale: towards unconventional characterization [invited]. Opt. Mater. Express 12, 2724-2746 (2022).
2022 DOI Publication link
optical chirality, other methods, plasmonics, quantum optics, Light Scattering Computation
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Bayesian optimization with improved scalability and derivative information for efficient design of nanophotonic structures
The authors propose an iterative inversion scheme for Bayesian optimization to find optimal designs of nanophotonic devices. This improves the scalability of the approach and allows to apply it in situations where a larger number of iterations is required and where derivative information is available.
X. Garcia-Santiago, et al. Bayesian Optimization With Improved Scalability and Derivative Information for Efficient Design of Nanophotonic Structures. J. Lightwave Technol., 39, 167 (2021).
2021 DOI Publication link
all, integrated optics, Light Scattering Computation, Optimization and Parameter Retrieval Methods
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Disordered antireflective Huygens' metasurface made from High-Index Disks for heterojunction solar cells
With the target to improve the efficiency of solar cells, a disordered arrangement of high-index dielectric submicron-sized disks is experimentally exploited as an antireflective Huygens' metasurface. The response of the entire metasurface is simulated using Born's approximation, where the distribution of the disks obtained from SEM images determines the structure factor while FEM simulations with JCMsuite are used to determine the form factor of the individual disks.
P. M. Piechulla, et al. Antireflective Huygens’ Metasurface with Correlated Disorder Made from High-Index Disks Implemented into Silicon Heterojunction Solar Cells. ACS Photonics (2021).
2021 DOI Publication link
Metamaterials, Photovoltaics, Light Scattering Computation