Download presentation
Presentation is loading. Please wait.
Published byRodger Harrell Modified over 6 years ago
1
Polarization and nonlinear effects enhancement in periodic structures and systems with strong field localization
2
Fabry-Perot resonator
Control of the resonant properties of nonlinear planar metamaterials Fabry-Perot resonator Bragg mirrors Nonlinear filling Photonic crystals Plasmonic structures Planar metamaterials
3
Fabry-Perot resonator
Nonreciprocity and bistability in layered structure with nonlinear defect Fabry-Perot resonator Nonlinear filling Bragg mirror Set of layers with nonlinear defect
4
Reflection and transmission spectra of layered chiral structure with linear defect
S - polarization P - polarization
5
Distribution of the field intensity inside the structure
S - polarization
6
Reflection and transmission spectra of layered achiral structure with nonlinear defect
Bistability
7
Frequency dependences of magnitude of reflection and transmission coefficients of chiral structure with nonlinear defect Multistability 7
8
Field distribution inside the structure with linear defect versus the chirality parameter
8
9
Transmission and reflection spectra of symmetric magnetophotonic multilayer with linear defect
Zeeman-like dublet
10
Transmission and reflection spectra of symmetric magnetophotonic multilayer with nonlinear defect
11
Polarization switching between orthogonally polarized states
Polarization bistability in symmetric magnetophotonic multilayer with nonlinear defect Polarization switching between orthogonally polarized states
12
Polarization switching between elliptically polarized states
Polarization bistability in asymmetric magnetophotonic multilayer with nonlinear defect Polarization switching between elliptically polarized states
13
The size of square translation cell is 900 nm
Optical bistability involving planar metamaterial with a broken structural symmetry Asymmetric split ring The size of square translation cell is 900 nm Nonlinear substrate
14
Array of asymmetric split rings
Frequency dependences of transmission coefficient and current magnitude in linear case Array of asymmetric split rings Fano resonances
15
Array of asymmetric split rings
Frequency dependences of current magnitude and transmission coefficient in nonlinear case Array of asymmetric split rings
16
increasing decreasing Hysteresis loops of the transmission coefficient
incident field magnitude decreasing increasing
17
Planar metamaterial and its unite cell
Papasimakis, Fu, Fedotov, Prosvirnin, Tsai, and Zheludev, Appl. Phys. Lett., 94 (2009) Trapped mode Nonlinear substrate
18
Field localization. Simulation of inner intensity
19
Simulation of nonlinearity
Current value: Permittivity of nonlinear substrate: Nonlinear equation on average value of current: Coefficients of transmission and reflection:
20
Optical bistability Array of two concentric rings Bistability
21
Bistability. Fano resonances
Array of double concentric rings Fano resonance
22
Absorption bistability by trapping-light planar metamaterial
Array of double concentric rings Bistability
23
Absorption bistability by trapping-light planar metamaterial
Closed loops
24
Double-layer fish-scale nonlinear metamaterial
Nonlinear substrate
25
Two kinds of resonances in double-layer fish-scale metamaterial
Resonant current distributions 1-st kind of resonance 2-nd kind of resonance
26
Frequency dependences of inner field intensity in double-layer fish-scale nonlinear metamaterial
lg A [kW/cm2] = line line line e1=3, enl=0.005 cm2/kW
27
Frequency dependences of transmission of double-layer fish-scale nonlinear metamaterial
A [kW/cm2] = line line line e1=3, enl=0.005 cm2/kW
28
Trapped mode resonance in the array of dielectric bars
All-dielectric array Germanium bars, n = 4.12 dx = dy = 975 nm Bar cross section = 195 x 195 nm2 A giant red shift and enhancement of the light confinement !
29
Resonant field distribution
The distribution of the electric field x-component within the periodic cell
30
Saturation effect in active metamaterial
The unite cell of all-dielectric array Silicon Silica Khardikov, Prosvirnin, arXiv: [physics.optics], 2012
31
Enhancement of luminescence of QD layer hybridized with all-dielectric metamaterial
Line Is = 2.0 2 - Is = 0.4 3 - Is = 0.04
32
The distribution of saturation factor in the cross section of array
The saturation factor 1/(1+I/Is)
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.