Download pdf - 1. Hybrid Silicon-Phase Change Nanoantenna for Surface ... - Presentation.pdfHybrid Silicon-Phase Change Nanoantenna for Surface Plasmon Polariton Routing Pavel Trofimov 1, Andrey

Hybrid Silicon-Phase Change Nanoantenna for Surface Plasmon Polariton Routing

Pavel Trofimov 1, Andrey Bogdanov 1, Ivan Sinev 1

1.

Sinev et al. ACS Photonics 2020Kuznetsov et al.

Scientific Reports 2012Wang et al. Nature Photonics 2016

Deringer et al. JARA-FIT Annual Report 2014

Phase-change materials Dielectric resonators

Wuttig et al.

Nature Photonics 2017

SummaryPhase-change

materialsSurface waves

routingSPP all-optical

switchDesign of hybrid

nanoantennaHybrid resonators

laser switching

Galaretta et al. Optica 2020

Dielectric resonators

SummaryPhase-change





laser switching



1.

SummaryPhase-change





laser switching

Sinev et al. Laser Photonics Review 2017, 11, 1700168



1.

SummaryPhase-change





laser switching

Backward SPP z=-1 | Forward SPP z=1

z = (my − iκpx)/(kSPP pz)

ISPP(φ0) ∼ (1 − (Re z) cos φ0)2 + (Im z)2 cos2 φ0



1.

SummaryPhase-change





laser switching

Silicon Sphere

Calculated switching

resolution λ/δλ:

20 < 60

Directivity Forward Directivity Backward Resolution Resonance wavelength

Hei

gh

t, μ

m

Diameter, μm Diameter, μm

Silicon Cylinder



1.

SummaryPhase-change





laser switching

Cylinder height 360 nm

Diameter 205 nm,

Resonant Wavelength 949 nm

Dia

met

er, μ

mD

iam

eter

, μ

m

Dia

met

er, μ

mD

iam

eter

, μ

m

-50 0 50

-50 0 50-50 0 50

-50 0 50

Wavelength detuning, nm Wavelength detuning, nm

Dir

ect

ivit

y Fo

rwar

dD

ire

ctiv

ity

Bac

kwar

d

Si + Amorphous GSST Si + Crystalline GSST



1.

SummaryPhase-change





laser switching

Sim

ula

tio

nEx

pe

rim

en

t

Femtosecond

Laser pulses

Mu

ltile

vel s

wit

chin

g



1.

Galaretta et al. Optica 2020