METANANO 2020 Polarization driven control over scattering of a - - PowerPoint PPT Presentation

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metanano 2020

METANANO 2020 Polarization driven control over scattering of a - - PowerPoint PPT Presentation

Dec 05, 2022 308 likes •434 views

METANANO 2020 Polarization driven control over scattering of a silicon nanoparticle on one-layered substrate Dmtiry Pidgayko, Zarina Sadrieva, Konstantin Ladutenko & Andrey Bogdanov ITMO University Preview Polarization driven control over

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Polarization driven control over scattering of a silicon nanoparticle on one-layered substrate

Dmtiry Pidgayko, Zarina Sadrieva, Konstantin Ladutenko & Andrey Bogdanov ITMO University

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METANANO 2020

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Preview Normal incidence Conclusion Geometry Oblique incidence Directivity control

Polarization driven control over scattering of a silicon nanoparticle on one-layered substrate

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Normal incidence Conclusion Geometry Oblique incidence Directivity control Preview

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Normal incidence Conclusion Geometry Oblique incidence Directivity control Preview

Polarization driven control over scattering of a silicon nanoparticle on one-layered substrate

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ΔS =STM - STE

Normal incidence Conclusion Geometry Oblique incidence Directivity control Preview

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TE TM 520 nm

Normal incidence Conclusion Geometry Oblique incidence Directivity control Preview

Polarization driven control over scattering of a silicon nanoparticle on one-layered substrate

Backward scattering

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TE TM 520 nm 540 nm

Normal incidence Conclusion Geometry Oblique incidence Directivity control Preview

Polarization driven control over scattering of a silicon nanoparticle on one-layered substrate

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TE TM 520 nm 540 nm 660 nm

Normal incidence Conclusion Geometry Oblique incidence Directivity control Preview

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TE TM 660 nm

Normal incidence Conclusion Geometry Oblique incidence Directivity control Preview

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Upward scattering

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TE TM 520 nm

Normal incidence Conclusion Geometry Oblique incidence Directivity control Preview

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Normal incidence Conclusion Geometry Oblique incidence Directivity control Preview

Polarization driven control over scattering of a silicon nanoparticle on one-layered substrate

At normal incidence, the thickness of the layer controls the enhancement and

suppression of the ED and the MD

At oblique incidence, it becomes possible to control the contribution of the ED

and the MD to the optical response through polarization of the incident light

We found negative angle and upward scattering regimes, and show that adjusting

the ED and the MD contributions controls directivity of scattered radiation. ACKNOWLEDGEMENT This work is supported by RFBR, project number 18-29-20063. The multipole expansion calculations are supported by RFBR (19-02-00419).