Symmetry-protected mode coupling near normal incidence for narrow-band transmission filtering in a dielectric grating

2014 ◽  
Vol 89 (16) ◽  
Author(s):  
J. M. Foley ◽  
S. M. Young ◽  
J. D. Phillips
Keyword(s):  
Mode Coupling ◽  
Narrow Band ◽  
Normal Incidence ◽  
Dielectric Grating ◽  
Symmetry Protected ◽  
Protected Mode

Disorder-induced vibration-mode coupling inSiO2films observed under normal-incidence infrared radiation

1994 ◽  
Vol 50 (7) ◽  
pp. 4881-4884 ◽  
Author(s):  
I. Montero ◽  
L. Galán ◽  
O. Najmi ◽  
J. M. Albella
Keyword(s):  
Infrared Radiation ◽  
Mode Coupling ◽  
Vibration Mode ◽  
Normal Incidence

scholarly journals Polarization-selective modulation of supercavity resonances originating from bound states in the continuum

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Chan Kyaw ◽  
Riad Yahiaoui ◽  
Joshua A. Burrow ◽  
Viet Tran ◽  
Kyron Keelen ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Bound States ◽  
Photonic Band Gap ◽  
Incidence Angle ◽  
Polarization State ◽  
Normal Incidence ◽  
Polarization Angle ◽  
Sensing Applications ◽  
Symmetry Protected ◽  
The Continuum

AbstractBound states in the continuum (BICs) are widely studied for their ability to confine light, produce sharp resonances for sensing applications and serve as avenues for lasing action with topological characteristics. Primarily, the formation of BICs in periodic photonic band gap structures are driven by symmetry incompatibility; structural manipulation or variation of incidence angle from incoming light. In this work, we report two modalities for driving the formation of BICs in terahertz metasurfaces. At normal incidence, we experimentally confirm polarization driven symmetry-protected BICs by the variation of the linear polarization state of light. In addition, we demonstrate through strong coupling of two radiative modes the formation of capacitively-driven Freidrich-Wintgen BICs, exotic modes which occur in off-Γ points not accessible by symmetry-protected BICs. The capacitance-mediated strong coupling at 0° polarization is verified to have a normalized coupling strength ratio of 4.17% obtained by the Jaynes-Cummings model. Furthermore, when the polarization angle is varied from 0° to 90° (0° ≤ ϕ < 90°), the Freidrich-Wintgen BIC is modulated until it is completely switched off at 90°.

Spatially and spectrally resolved ultra-narrowband TE-polarization absorber based on the guide-mode resonance

2017 ◽  
Vol 31 (24) ◽  
pp. 1750223
Author(s):  
Yan-Lin Liao ◽  
Yan Zhao ◽  
Xingfang Zhang ◽  
Wen Zhang ◽  
Zhongzhu Wang
Keyword(s):  
Normal Incidence ◽  
Optical Filters ◽  
Grating Period ◽  
Angle Measurement ◽  
Angular Width ◽  
Dielectric Grating ◽  
Guide Mode ◽  
Potential Applications ◽  
Polarization Electric Field ◽  
Spectrally Resolved

A spatially and spectrally resolved ultra-narrowband absorber with a dielectric grating and metal substrate has been reported. The absorber shows that the absorption rate is more than 0.99 with the absorption bandwidth less than 1.5 nm at normal incidence for TE polarization (electric field is parallel to grating grooves). The angular width of the absorption is about 0.27[Formula: see text]. The wavelength-angle sensitivity and absorption-angle sensitivity are 13.4 nm per degree and 296.3% per degree, respectively. The simulation results also show the spatially and spectrally resolved ultra-narrowband absorption is originated from the guide-mode resonance. In addition, the wavelength-angle sensitivity can be improved by enlarging the grating period according to the guide-mode resonance mechanism. The proposed absorber has potential applications in optical filters, angle measurement and thermal emitters.

scholarly journals Normal incidence filters using symmetry-protected modes in dielectric subwavelength gratings

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Xuan Cui ◽  
Hao Tian ◽  
Yan Du ◽  
Guang Shi ◽  
Zhongxiang Zhou
Keyword(s):  
Normal Incidence ◽  
Subwavelength Gratings ◽  
Symmetry Protected

scholarly journals Narrow band resonant grating of 100% reflection under normal incidence

2006 ◽  
Vol 14 (26) ◽  
pp. 12613 ◽  
Author(s):  
Nathalie Destouches ◽  
Jean-Claude Pommier ◽  
Olivier Parriaux ◽  
Tina Clausnitzer ◽  
Nikolai Lyndin ◽  
...  
Keyword(s):  
Narrow Band ◽  
Normal Incidence ◽  
Resonant Grating

scholarly journals Optimal photon-pair single-mode coupling in narrow-band spontaneous parametric downconversion with arbitrary pump profile

2013 ◽  
Vol 30 (2) ◽  
pp. 288 ◽  
Author(s):  
Jean-Loup Smirr ◽  
Matthieu Deconinck ◽  
Robert Frey ◽  
Imad Agha ◽  
Eleni Diamanti ◽  
...  
Keyword(s):  
Mode Coupling ◽  
Narrow Band ◽  
Single Mode ◽  
Photon Pair

A narrow-band coherent perfect absorption in bright–bright mode coupling metamaterials

2016 ◽  
Vol 18 (12) ◽  
pp. 125101 ◽  
Author(s):  
Xinguang Hu ◽  
Shuai Yuan ◽  
Ammar Armghan ◽  
Yang Liu ◽  
Cheng Zeng ◽  
...  
Keyword(s):  
Mode Coupling ◽  
Narrow Band ◽  
Perfect Absorption ◽  
Coherent Perfect Absorption ◽  
Bright Mode
Sign in / Sign up

Export Citation Format

Share Document