Numerical optimization for the inverse design of photonic structures is a tool that providing increasingly convincing results—even though wave nature problems in photonics makes them particularly complex. In meantime, field global rapidly evolving but prone to reproducibility problems, making it harder identify right algorithms use. This paper thought as tutorial on problems. We provide general background and rigorous methodology physicist interested using these tools—especially context...

Effective cross sections of nano-objects are fundamental properties that determine their ability to interact with light. However, measuring them for individual resonators directly and quantitatively remains challenging, particularly because the very low signals involved. Here, we experimentally measure thermal emission section metal-insulator-metal nanoresonators using a stealthy hyperuniform distribution based on hierarchical Poisson-disk algorithm. In such distributions, there no...

Numerical simulations of the rotational contribution oxygen and nitrogen molecules to Kerr refractive index change in air are performed for ultrashort laser pulses near- mid-infrared wavelength region. The calculated molecular response is parametrized by means a damped harmonic oscillator model that easily tractable numerical long-distance propagation pulses. Our show from available systems long enough be dramatically affected during propagation.

Nanophotonic devices manipulate light at sub-wavelength scales, enabling tasks such as concentration, routing, and filtering. Designing these is a challenging task. Traditionally, solving this problem has relied on computationally expensive, iterative methods. In recent years, deep learning techniques have emerged promising tools for tackling the inverse design of nanophotonic devices. While several review articles provided an overview progress in rapidly evolving field, there need...

We present PyMoosh, a Python-based simulation library designed to provide comprehensive set of numerical tools allowing compute essentially all optical characteristics multilayered structures, ranging from reflectance and transmittance guided modes photovoltaic efficiency. PyMoosh is not just for research purposes, but also use-cases in education. To this end, we have invested significant effort ensuring user-friendliness simplicity the interface. has been developed line with principles Open...

We present PyMoosh, a Python-based simulation library designed to provide comprehensive set of numerical tools allowing compute essentially all optical characteristics multilayered structures, ranging from reflectance and transmittance guided modes photovoltaic efficiency. PyMoosh is not just for research purposes, but also use-cases in education. To this end, we have invested significant effort ensuring user-friendliness simplicity the interface. has been developed line with principles Open...

Effective cross-sections of nano-objects are fundamental properties that determine their ability to interact with light. However, measuring for individual resonators directly and quantitatively remains challenging, particularly because the very low signals involved. In this contribution, we present how experimentally measured thermal emission cross-section metal-insulator-metal nano-resonators using a hyperuniform distribution based on hierarchical Poisson-disk algorithm. This method relies...

Metallic gratings can be used as infrared filters, but are limited by their narrow bandwidth due to metallic losses. Here, we propose a groove-slit-groove (GSG) structure that exhibits an angularly independent extraordinary optical transmission of over 70% with full spectral width at half maximum 2 µm in the longwave range. Each groove interferes central slit following Fano profile, confirmed pole study complex frequency plane. In addition, two profiles mirror each other, so association...

Metallic gratings can be used as infrared filters, but are limited by their narrow bandwidth due to metallic losses. Here, we propose a groove-slit-groove (GSG) structure that exhibits an angularly independent extraordinary optical transmission of over 70% with full spectral width at half maximum 2 µm in the longwave range. Each groove interferes central slit following Fano profile, confirmed pole study complex frequency plane. In addition, two profiles mirror each other, so association...

Metallic gratings can be used as infrared filters, but their performance is often limited by bandwidth restrictions due to metallic losses. In this work, we propose a groove-slit-groove (GSG) structure that overcomes these limitations exhibiting large bandwidth, angularly independent, extraordinary optical transmission. Our design achieves high transmission efficiency in the longwave range, driven Fano-type resonances created through interaction between grooves and central slit. This...

We demonstrate that including the second viscosity of an electron gas in hydrodynamic model allows for highly accurate modeling optical response heavily doped semiconductors. In our setup, which improves resonance visibility compared to previous approaches, plasmon resonances become more distinct, allowing detailed analysis underlying physics. With advanced fitting techniques based on a physics-informed cost function and tailored optimization algorithm, we obtain close agreement between...

Numerical optimization for the inverse design of photonic structures is a tool which providing increasingly convincing results -- even though wave nature problems in photonics makes them particularly complex. In meantime, field global rapidly evolving but prone to reproducibility problems, making it harder identify right algorithms use. This paper thought as tutorial on problems. We provide general background and rigorous methodology physicist interested using these tools especially context...

Sub-wavelength metallic grooves behave as Fabry-Perot nanocavities able to resonantly enhance the absorption of light well intensity electromagnetic field. Here, with a one-mode analytical model, we investigate effect correlated disorder on 1D groove arrays i.e., randomly shaped and positioned layer. We show that jitter-based leads redistribution energy compared periodic case. In an extreme case, diffracting array can be converted into highly scattering (98% at λ = 2.8 µm 1 full width half...

Effective cross-sections of nano-objects are fundamental properties that determine their ability to interact with light. However, measuring them for individual resonators directly and quantitatively remains challenging, particularly because the very low signals involved. Here, we experimentally measure thermal emission cross-section metal-insulator-metal nano-resonators using a stealthy hyperuniform distribution based on hierarchical Poisson-disk algorithm. In such distributions, there no...

The study of nanoantenna arrays has been a major research subject since the improvement nanofabrication techniques allowed design subwavelength antennas, which proved to have new and interesting optical properties. Negative or near zero index behavior, extraordinary diffraction transmission, huge field enhancement, paths opened by these devices are very diverse. Our team specialises in Infrared Metal-Insulator-Metal resonators, for most important applications telecommunications detection. In...