Results 41 to 50 of about 150,268,923 (161)

Active angular tuning and switching of Brewster quasi bound states in the continuum in magneto-optic metasurfaces

Nanophotonics, 2021
Bound states in the continuum (BICs) emerge throughout physics as leaky/resonant modes that remain, however, highly localized. They have attracted much attention in photonics, and especially in metasurfaces.
Abujetas Diego R., de Sousa Nuno, García-Martín Antonio, Llorens José M., Sánchez-Gil José A.   +4 more
doaj   +1 more source

Metasurface engineering through bound states in the continuum

, 2019
Metasurfaces have attracted a lot of attention in recent years due to novel ways they provide for the efficient wavefront control and engineering of the resonant transmission.
Vladimir R. Tuz (3959858), Anton S. Kupriianov (14359332), Yuri S. Kivshar (1505293), Yi Xu (131145), Victor Dmitriev (5187827), Andrey Sayanskiy (14412540)   +5 more
core   +1 more source

Nonradiating photonics with resonant dielectric nanostructures

Nanophotonics, 2019
Nonradiating sources of energy have traditionally been studied in quantum mechanics and astrophysics but have received very little attention in the photonics community. This situation has changed recently due to a number of pioneering theoretical studies
Koshelev Kirill, Favraud Gael, Bogdanov Andrey, Kivshar Yuri, Fratalocchi Andrea   +4 more
doaj   +1 more source

Spectral Singularities do not Correspond to Bound States in the Continuum [PDF]

, 2017
We show that, contrary to a claim made in arXiv:1011.0645, the von Neumann-Winger bound states that lie in the continuum of the scattering states are fundamentally different from Naimark’s spectral ...
Mostafazadeh , Ali
core  

Room-temperature polariton repulsion and ultra-strong coupling for a non-trivial topological one-dimensional tunable Fibonacci-conjugated porous-Silicon photonic quasi-crystal showing quasi bound-states-in-the-continuum

, 2023
Room temperature strong coupling from CdSeS/Zn quantum-dots embedded into a tunable porous-silicon Fibonacci-conjugated array could be observed when exciton's energy was tuned either to the photonic-edge or the defect in the middle of the pseudo-bandgap ...
Jorge-Alejandro Reyes-Esqueda (15713648), Atzin David Ruiz Pérez (15713639), Salvador Escobar Guerrero (15713642), Ma. Del Rocío Nava Lara (15713645)   +3 more
core   +1 more source

Active Formation of Friedrich–Wintgen Bound States in the Continuum in a Hybrid Plasmonic–Photonic Structure

Advanced Photonics Research
The Friedrich–Wintgen bound state in the continuum (FW BIC) provides a unique approach for achieving high quality factor (Q‐factor) resonance, which has attracted wide attention and promoted the development of various applications. However, the FW BIC is
Xiao‐Fei Yan, Xin‐Yang Wang, Qi Lin, Ling‐Ling Wang, Gui‐Dong Liu   +4 more
doaj   +1 more source

Giant circular dichroism and ultra-high Q-factor resonance induced by qBIC excitation in oblique lattice metasurfaces

Results in Physics
Chiral metasurfaces exhibiting narrow-band circular dichroism play a crucial role in chiral optics. Enhancing the quality factors (Q-factors) of their chiral response and achieving dynamic tuning of circular dichroism (CD) have emerged as research ...
Shuyuan lv, Huang Wei, Wenfeng Luo, Bosen Zhai, Ziwen Su   +4 more
doaj   +1 more source

Active nonlocal metasurfaces

Nanophotonics, 2020
Actively tunable and reconfigurable wavefront shaping by optical metasurfaces poses a significant technical challenge often requiring unconventional materials engineering and nanofabrication.
Malek Stephanie C., Overvig Adam C., Shrestha Sajan, Yu Nanfang   +3 more
doaj   +1 more source

Exceptional bound states in the continuum [PDF]

Bound states in the continuum and exceptional points are unique singularities of non-Hermitian systems. In optical implementations, the former demonstrate strong enhancement of the electromagnetic field, while the latter exhibit high sensitivity to small
Canós Valero, Adrià, Muljarov, Egor A., Sztranyovszky, Zoltan, Bogdanov, Andrey, Weiss, Thomas   +4 more
core   +1 more source

Achieving asymmetry parameter-insensitive resonant modes through relative shift–induced quasi-bound states in the continuum

Nanophotonics
High-Q resonances in metasurfaces, stemming from symmetry-protected bound states in the continuum (BICs), have proven to be effective for achieving high-performance optical devices.
Sang Tian, Mi Qing, Yang Chaoyu, Zhang Xianghu, Wang Yueke, Ren Yongze, Xu Ting   +6 more
doaj   +1 more source