WebBIC是连续谱中离散的bound state,也叫embedded eigenmode。它的品质因数Q无限大,因此平面波激励不起来。而guided wave,不是在连续谱区域中存在的 。一般airline会隔开连续(辐射)谱和离散(导波,准导波)谱 … Web1 day ago · In this paper, we obtain quasi-bound states in the continuum in THz band using silicon-based metasurfaces with an asymmetric structure that supports reflection-type quasi-BIC resonance. The ultra-high Q factor of quasi-BIC is used to increase the GH shift to more than 5000 times of wavelength. A huge GH shift is achieved in the terahertz band ...
Bound states in the continuum based on the total internal …
WebFeb 1, 2004 · Sandia National Laboratories 1. In the past decade, symmetry-protected bound states in the continuum (BICs) have proven to be an important design principle for creating and enhancing devices reliant upon states with high-quality (Q) factors, such as sensors, lasers, and those for harmonic generation. However, as I will discuss, it is … WebJun 4, 2024 · Abstract. We present simple yet extremely accurate coupled-wave models describing the formation of bound states in the continuum (BICs) in one-dimensional … coco full movie 123movies 2017 in english
[2211.03675] Super quasi-bound state in the continuum
WebDec 27, 2024 · It is well established that for symmetry-protected bound states in the continuum (BICs), introducing the broken geometry symmetry in a dielectric metasurface transforms such a BIC into a quasi-BIC (QBIC) with high-quality factor (Q-factor). Typically, the smaller the asymmetry parameter, the larger the Q-factor. WebApr 7, 2024 · Bound states in the continuum (BICs) can be discovered in many physical systems, for example, electromagnetic, acoustic, water, and elastic waves [1,2,3,4]. Many kinds of photonic systems have been designed to study optical BICs, such as photonic crystals [ 5 , 6 ], optical waveguides [ 7 , 8 , 9 ], graphene quantum-dot structure [ 10 ], … WebNegative refraction might occur at the interface between a two-dimensional photonic crystal (PhC) slab and a homogeneous medium, where the guiding of the electromagnetic wave along the third dimension is governed by total internal reflection. Herein, we report on the observation of negative refraction in the PhC slab where the vertical guiding is enabled … callum allen south shields