Angle-dependent resonance modes in terahertz photonic crystals and metasurfaces

2021 ◽  
Author(s):  
Thomas A. Searles
Keyword(s):  
Photonic Crystals ◽  
Resonance Modes

scholarly journals Finite-size limitations on Quality Factor of guided resonance modes in 2D Photonic Crystals

2013 ◽  
Vol 21 (20) ◽  
pp. 23640 ◽  
Author(s):  
Jon Olav Grepstad ◽  
Martin M. Greve ◽  
Bodil Holst ◽  
Ib-Rune Johansen ◽  
Olav Solgaard ◽  
...  
Keyword(s):  
Photonic Crystals ◽  
Quality Factor ◽  
Finite Size ◽  
Resonance Modes

Far-field disentanglement of modes in hybrid plasmonic-photonic crystals by fluorescence nano-reporters

Nanophotonics ◽  
2013 ◽  
Vol 2 (3) ◽  
pp. 173-185 ◽  
Author(s):  
Simona Ungureanu ◽  
Branko Kolaric ◽  
Jianing Chen ◽  
Rainer Hillenbrand ◽  
Renaud A. L. Vallée
Keyword(s):  
Photonic Crystals ◽  
Near Field ◽  
Optical Microscope ◽  
Hybrid Structure ◽  
Silver Layer ◽  
Far Field ◽  
Polystyrene Spheres ◽  
Resonance Modes ◽  
Field Patterns ◽  
Plasmonic Structures

AbstractIn this paper, the resonance modes exhibited by a hybrid nanostructure have been disentangled in the far-field owing to narrow-band fluorescence nano-reporters. Hybrid plasmonic-photonic crystals were fabricated using large (457 nm) monodisperse polystyrene spheres self-assembled into 2D photonic crystals and subsequently coated by a 30 nm thick silver layer. Such structures exhibit a complex resonance pattern, which has been elucidated owing to numerical simulations and electric near-field patterns obtained with a scattering type scanning near-field optical microscope (s-SNOM). For the sake of disentangling the resonance modes of the hybrid structure in the far-field, different types of semiconductor quantum dots (QDs), acting as nano-reporters of the local interactions, were dispersed on top of distinct structures. Depending on the relative overlap of the emission spectrum of a particular type of QDs with the resonance features of the hybrid structure, we affect their emission rate in a unique way, as a consequence of the complex interaction occurring between the plasmo-photonic modes and the excitons. Such plasmonic structures appear to be particularly relevant for fluorescence-based sensing devices.

scholarly journals Tunable, polarization-sensitive, dual guided-resonance modes in photonic crystals

2019 ◽  
Vol 27 (13) ◽  
pp. 17658 ◽  
Author(s):  
Aravind Krishnan ◽  
Michelle L. Povinelli
Keyword(s):  
Photonic Crystals ◽  
Resonance Modes

scholarly journals Photonic Band Gaps and Resonance Modes in 2D Twisted Moiré Photonic Crystal

Photonics ◽  
2021 ◽  
Vol 8 (10) ◽  
pp. 408
Author(s):  
Khadijah Alnasser ◽  
Steve Kamau ◽  
Noah Hurley ◽  
Jingbiao Cui ◽  
Yuankun Lin
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystals ◽  
Photonic Band Gap ◽  
2D Materials ◽  
Band Gaps ◽  
Photonic Band Gaps ◽  
Resonance Modes ◽  
Optical Analog ◽  
Photonic Band ◽  
Dielectric Filling

The study of twisted bilayer 2D materials has revealed many interesting physics properties. A twisted moiré photonic crystal is an optical analog of twisted bilayer 2D materials. The optical properties in twisted photonic crystals have not yet been fully elucidated. In this paper, we generate 2D twisted moiré photonic crystals without physical rotation and simulate their photonic band gaps in photonic crystals formed at different twisted angles, different gradient levels, and different dielectric filling factors. At certain gradient levels, interface modes appear within the photonic band gap. The simulation reveals “tic tac toe”-like and “traffic circle”-like modes as well as ring resonance modes. These interesting discoveries in 2D twisted moiré photonic crystal may lead toward its application in integrated photonics.

Elusive photonic crystals come a step closer

Nature ◽  
2020 ◽  
Vol 585 (7826) ◽  
pp. 506-507
Author(s):  
John C. Crocker
Keyword(s):  
Photonic Crystals
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