the Research Grants Council of Hong Kong(AoE/P-502/20,17309021,16303119,16310420);the Croucher Foundation(CAS20SC01)and New Cornerstone Science Foundation.
Topological photonic insulators show promise for applications in compact integrated photonic circuits due to their ability to transport light robustly through sharp bendings.The number of topological edge states relie...
This work is supported by the National Natural Science Foundation of China(Grant no.52075289).
Photonic crystals are utilized in many noteworthy applications like optical communications,light flow control,and quantum optics.Photonic crystal with nanoscale structure is important for the manipulation of light pro...
We demonstrate a photonic analog of twisted bilayer graphene that has ultra-flat photonic bands and exhibits extreme slow-light behavior.Our twisted bilayer photonic device,which has an operating wavelength in the C-b...
supported by the Natural National Science Foundation(NSFC)(Grant No.11874026);the Research Grants Council of Hong Kong,China(Grant Nos.AoE/P-02/12 and 16304717).
It was recently demonstrated that the connectivities of bands emerging from zero frequency in dielectric photonic crystals are distinct from their electronic counterparts with the same space groups.We discover that in...
supported by the Russian Foundation for Basic Research,research project No.14-29-07132;research project No.14-29-07197。
Efficient nonlinear conversion requires that interacting optical waves maintain a consistent phase relationship when traveling in a medium despite its dispersion.Birefringent phase-matching,which is often used to comp...
supported by the Austrian Science Funds(FWF):F 4909-N23(Next Lite);the PLATON project 35N within the Austrian NANO Initiative;the‘Gesellschaft für Mikro-und Nanoelektronik’GMe;support from the European Research Council under the European Union’s Horizon 2020 research and innovation program(Grant Agreement No.639109).
We directly measure optical bound states in the continuum(BICs)by embedding a photodetector into a photonic crystal slab.The BICs observed in our experiment are the result of accidental phase matching between incident...
Portions of this work were performed at the Molecular Foundry,Lawrence Berkeley National Laboratory,which is supported by the Office of Science,Office of Basic Energy Sciences,of the US Department of Energy under contract no.DE-AC02-05CH11231;This work was partially supported by the Italian Ministry of University and Research under grants PON PANDION 01_00375.
The behavior of a negative refraction photonic crystal slab irradiated with out-of-plane incident beam is an unexplored subject.In such an experimental configuration,guided mode resonance appears in the reflection spe...
This work was supported by the Major State Basic Research Development Program of China(No.2014CB643506);the National Natural Science Foundation of China(Grant Nos.11374127,11304118,61204015,81201738,61177042 and 11174111);the Program for Chang Jiang Scholars and Innovative Research Teams in the University(No.IRT13018).
Ru complexes([Ru(dpp)3]Cl2)were spin coated on poly(methyl methacrylate)(PMMA)opal photonic crystals(PhCs),and a,320-fold luminescence enhancement was observed compared to that on glass,which is the largest luminescen...
Portions of this work were completed as part of a user project at the Molecular Foundry,Lawrence Berkeley National Laboratory,which is supported by the US Department of Energy under contract DE-AC02-05CH11231;We gratefully acknowledge Aleksandr Polyakov for his suggestions in critically revising the manuscript.This work was partially supported by Italian National Operative Programs PON01_02782,PON01_01525 and PON01_00375.
In this work,we present the first experimental evidence of negative dielectric susceptibility in a two-dimensional silicon photonic crystal(PhC)with negative refractive index behavior.In the frequency range in which t...