Sebastian A. Schulz
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View article: The 2025 Active Metamaterials Roadmap
The 2025 Active Metamaterials Roadmap Open
Active metamaterials are engineered structures that possess novel properties that can be changed after the point of manufacture. Their novel properties arise predominantly from their physical structure, as opposed to their chemical composi…
View article: Low-temperature fabrication of plasmonic titanium nitride thin films by electron beam evaporation
Low-temperature fabrication of plasmonic titanium nitride thin films by electron beam evaporation Open
Titanium nitride (TiN) is a refractory metal nitride compound with the potential to function as an alternative plasmonic material to gold, especially for high-power linear and nonlinear applications such as materials processing, telecommun…
View article: Impact of permittivity grading on coupled resonance in hybrid-ENZ metasurfaces
Impact of permittivity grading on coupled resonance in hybrid-ENZ metasurfaces Open
Hybrid-epsilon-near-zero (ENZ) metasurfaces, consisting of nanoantenna arrays on thin films of ENZ materials, feature a coupled resonance spectrum and have gathered significant interest for their nonlinear optical properties and their use …
View article: Nonlinear Nanophotonics: feature issue introduction
Nonlinear Nanophotonics: feature issue introduction Open
We introduce the feature issue of Optical Materials Express on Nonlinear Nanophotonics. This collection highlights recent advances in the design, fabrication, and application of nanophotonic systems that exploit nonlinear optical phenomena…
View article: The 2024 Active Metamaterials Roadmap
The 2024 Active Metamaterials Roadmap Open
Active metamaterials are engineered structures that possess novel properties that can be changed after the point of manufacture. Their novel properties arise predominantly from their physical structure, as opposed to their chemical composi…
View article: Roadmap on photonic metasurfaces
Roadmap on photonic metasurfaces Open
Here we present a roadmap on Photonic metasurfaces. This document consists of a number of perspective articles on different applications, challenge areas or technologies underlying photonic metasurfaces. Each perspective will introduce the…
View article: Engineering Waveguide Nonlinear Effective Length via Low Index Thin Films
Engineering Waveguide Nonlinear Effective Length via Low Index Thin Films Open
Novel photonic nanowires are fabricated using low‐index materials and tested in the near‐infrared spectrum to assess their nonlinear optical properties. In this work, the need to redefine the standard nonlinear figure of merit in terms of …
View article: Beyond Order: Random, Aperiodic, and Hyperuniform Photonic Materials: introduction to the special issue
Beyond Order: Random, Aperiodic, and Hyperuniform Photonic Materials: introduction to the special issue Open
The editors introduce the feature issue on “Beyond Order: Random, Aperiodic, and Hyperuniform Photonic Materials,” which includes nine articles.
View article: High-throughput speckle spectrometers based on multifractal scattering media
High-throughput speckle spectrometers based on multifractal scattering media Open
We present compact integrated speckle spectrometers based on monofractal and multifractal scattering media in a silicon-on-insulator platform. Through both numerical and experimental studies we demonstrate enhanced optical throughput, and …
View article: Temperature-controlled spectral tuning of a single wavelength polymer-based solid-state random laser
Temperature-controlled spectral tuning of a single wavelength polymer-based solid-state random laser Open
We demonstrate temperature-controlled spectral tunability of a partially-pumped single-wavelength random laser in a solid-state random laser based on DCM [4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran] doped PMMA (polymeth…
View article: Engineering Waveguide Nonlinear Effective Length via Low Index Thin Films
Engineering Waveguide Nonlinear Effective Length via Low Index Thin Films Open
Novel photonic nanowires were fabricated using low-index materials and tested in the near-infrared spectrum to assess their nonlinear optical properties. In this work, we argue the need to redefine the standard nonlinear figure of merit in…
View article: Engineering Waveguide Nonlinear Effective Length via Low Index Thin Films
Engineering Waveguide Nonlinear Effective Length via Low Index Thin Films Open
Novel photonic nanowires were fabricated using low-index materials and tested in the near-infrared spectrum to assess their nonlinear optical properties. In this work, we argue the need to redefine the standard nonlinear figure of merit in…
View article: High-throughput speckle spectrometers based on multifractal scattering media
High-throughput speckle spectrometers based on multifractal scattering media Open
We present compact integrated speckle spectrometers based on monofractal and multifractal scattering media in a silicon-on-insulator platform. Through both numerical and experimental studies we demonstrate enhanced optical throughput, and …
View article: Engineering Waveguide Nonlinear Effective Length via Low Index Thin Films
Engineering Waveguide Nonlinear Effective Length via Low Index Thin Films Open
Novel photonic nanowires were fabricated using low-index materials and tested in the near-infrared spectrum to assess their nonlinear optical properties. In this work, we argue the need to redefine the standard nonlinear figure of merit in…
View article: Broadband Continuous Spectral Control of a Single Wavelength Polymer-Based Solid-State Random Laser
Broadband Continuous Spectral Control of a Single Wavelength Polymer-Based Solid-State Random Laser Open
We demonstrate temperature-controlled spectral tunability of a partially-pumped single-wavelength random laser in a solid-state random laser based on DCM (4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran) doped PMMA (polymeth…
View article: Accurate and efficient prediction of photonic crystal waveguide bandstructures using neural networks
Accurate and efficient prediction of photonic crystal waveguide bandstructures using neural networks Open
We demonstrate the use of neural networks to predict the optical properties of photonic crystal waveguides (PhCWs) with high accuracy and significantly faster computation times compared to traditional simulation methods. Using 100,000 PhCW…
View article: A high-precision silicon-on-insulator position sensor
A high-precision silicon-on-insulator position sensor Open
Integrated photonic devices provide significant advantages over their conventional counterparts, such as a drastically reduced footprint as well as compatibility with other photonic or electronic circuitry. In this work, we present a high-…
View article: Shape Dependent Conformable Holographic Metasurfaces
Shape Dependent Conformable Holographic Metasurfaces Open
In this paper, the design, fabrication, and experimental demonstration of conformable holographic metasurfaces are reported. Herein, it is shown that the produced holographic image changes as the metasurface is applied to targets with diff…
View article: Towards integrated position sensors with nanometer precision
Towards integrated position sensors with nanometer precision Open
The ability to precisely measure the displacement between two elements, e.g. a mask and a substrate or a beam and optical elements, is fundamental to many precision experiments and processes. Yet typical optical displacement sensors strugg…
View article: Enhancing throughput of disorder-based broadband spectrometer using correlated disorder
Enhancing throughput of disorder-based broadband spectrometer using correlated disorder Open
Funding: This work is funded by EPSRC project EP/V029975/1: ”DIsorder enhanced on-chip spectrometers.”
View article: The halo bias for number counts on the light cone from relativistic N-body simulations
The halo bias for number counts on the light cone from relativistic N-body simulations Open
We present the halo number counts and its two-point statistics, the observable angular power spectrum, extracted for the first time from relativistic N-body simulations. The halo catalogues used in this work are built from the relativistic…
View article: Anti-reflection coatings for epsilon-near-zero materials
Anti-reflection coatings for epsilon-near-zero materials Open
Epsilon-near-zero (ENZ) materials have attracted much interest within the photonics community due to the various novel light-matter interactions that can occur in the ENZ regime. These materials display a large impedance mismatch between t…
View article: Evolution of System Embedded Optical Interconnect in Sub-Top-of-Rack Data Center Systems
Evolution of System Embedded Optical Interconnect in Sub-Top-of-Rack Data Center Systems Open
In this paper we review key technological milestones in system embedded optical interconnects in data centers that have been achieved between 2014 and 2020 on major European Union research and development projects. This includes the develo…
View article: Publisher Correction: Thermo-optically induced transparency on a photonic chip
Publisher Correction: Thermo-optically induced transparency on a photonic chip Open
View article: Thermo-optically induced transparency on a photonic chip
Thermo-optically induced transparency on a photonic chip Open
View article: Silicon Photonic Micro-Transceivers for Beyond 5G Environments
Silicon Photonic Micro-Transceivers for Beyond 5G Environments Open
Here, we report on the design and performance of a silicon photonic micro-transceiver required to operate in 5G and 6G environments at high ambient temperatures above 105 °C. The four-channel “IOCore” micro-transceiver incorporates a 1310 …
View article: Unconventional time-bandwidth performance of resonant cavities with nonreciprocal coupling
Unconventional time-bandwidth performance of resonant cavities with nonreciprocal coupling Open
Funding: Hellenic Foundation for Research and Innovation (HFRI), General Secretariat for Research and Technology (GSRT) (No. 1819) (KLT).
View article: Model of thermo-optic nonlinear dynamics of photonic crystal cavities
Model of thermo-optic nonlinear dynamics of photonic crystal cavities Open
The wavelength scale confinement of light offered by photonic crystal (PhC) cavities is one of the fundamental features on which many important on-chip photonic components are based, opening silicon photonics to a wide range of application…
View article: A Hilbert transform method for measuring linear and nonlinear phase shifts imparted by metasurfaces
A Hilbert transform method for measuring linear and nonlinear phase shifts imparted by metasurfaces Open
View article: Arbitrarily high time bandwidth performance in a nonreciprocal optical resonator with broken time invariance
Arbitrarily high time bandwidth performance in a nonreciprocal optical resonator with broken time invariance Open