Results 61 to 70 of about 86,750 (278)

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik, Fedor Kovalev, Mingkai Liu, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Mariusz Martyniuk, Ilya Shadrivov   +7 more
wiley   +1 more source

Compact, ultrashort, tunable UV source at 100 kHz [PDF]

EPJ Web of Conferences
We report on a compact UV tunable (280-500 nm) ultrafast source based on a resonant dispersive wave process in a gas filled hollow capillary driven by a post-compressed Yb:YAG laser amplifier delivering µJ level pulses at 100 kHz.
Parize Gautier, Cichelli Giovanni, Natile Michele, Guichard Florent, Hanna Marc, Georges Patrick   +5 more
doaj   +1 more source

Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review

Advanced Science, EarlyView.
Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh, Ki‐bum Lee, Junghyeon Lee, Seunghee Cho, Malkeshkumar Patel, Hangfei Li, Yu Wen, Ye Zhou, Joondong Kim   +8 more
wiley   +1 more source

Ultra-high-sensitivity two-dimensional bend sensor [PDF]

, 2006
A multicore fibre Fabry-Perot-based strain sensor interrogated with tandem interferometry for bend measurement is described. Curvature in two dimensions is obtained by measuring the difference in strain between three co-located low finesse Fabry-Perot ...
Flockhart, G M H, Cranch, G A, Barton, J S, Kirkendall, C K, MacPherson, W N   +4 more
core   +4 more sources

Advances in Se Wide‐Bandgap Photovoltaics and TexSe1‐x SWIR Photodiodes

Advanced Science, EarlyView.
In this review, fundamental properties and current challenges in Se photovoltaics (PVs) for tandem and indoor PVs and TexSe1‐x alloys for short wave infrared photodiodes are discussed. A case is made for the practicality of elemental chalcogenide optoelectronics, and a pathway toward resolving the key challenges in these respective technologies is ...
Adam D. Alfieri, Deep Jariwala
wiley   +1 more source

Experimental demonstration of a temporal pulse shaping method based on nonlinear chirp [PDF]

EPJ Web of Conferences
We present a general temporal shaping method based on spectral phase-only modulation for ultrafast laser sources. We explain the working principle of this technique and use it experimentally to generate a ramp-shaped pulse at the output of a laser source
Parize Gautier, Natile Michele, Guichard Florent, Comby Antoine, Hanna Marc, Georges Patrick   +5 more
doaj   +1 more source

Polarization conversion with a photonic crystal slab [PDF]

Journal of the European Optical Society-Rapid Publications, 2008
We show that a photonic crystal slab can enable efficient polarization conversion. Two mechanisms are identified. The first mechanism relies on the anisotropy of the bulk properties of the metamaterial and is mediated by interferences.
Laroche Marine, Marquier François, Vandenbem Cédric, Greffet Jean-Jacques   +3 more
doaj   +1 more source

Role of Static Modes in Quasinormal Modes Expansions: When and How to Take Them into Account?

Mathematics, 2022
The scattering of electromagnetic waves by a resonator is determined by the excitation of the eigenmodes of the system. In the case of open resonators made of absorbing materials, the system is non-Hermitian, and the eigenmodes are quasinormal modes ...
Mondher Besbes, Christophe Sauvan
doaj   +1 more source

Fabry-Perot Bound States in the Continuum in an Anisotropic Photonic Crystal

, 2022
An anisotropic photonic crystal containing two anisotropic defect layers is considered. It is demonstrated that the system under can support a Fabry-Perot bound state in the continuum (FP-BIC).
Stepan V. Nabol (14363028), Ivan V. Timofeev (4376017), Dmitrii N. Maksimov (14363031), Pavel S. Pankin (4376014)   +3 more
core   +1 more source

Electrically Tunable Graphene‐Metal Hybrid Metasurfaces for High‐Efficiency, Broadband Mid‐Infrared Transmission Modulation

Advanced Science, EarlyView.
A graphene‐metal hybrid transmissive metasurface enables electrically tunable mid‐infrared transmission modulation through ionic gel top gating. By combining graphene with a metallic slit metasurface, high modulation efficiency and broadband operation are achieved simultaneously, demonstrating efficient electrical control of mid‐infrared transmission ...
Heonhak Ha, Jinseok Kong, Junhyung Kim, Jiwon Kang, Min Seok Jang   +4 more
wiley   +1 more source