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Novel Trapping and Scattering of Lig...

Hsu, Chia Wei.

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Novel Trapping and Scattering of Light in Resonant Nanophotonic Structures.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Novel Trapping and Scattering of Light in Resonant Nanophotonic Structures./
作者:	Hsu, Chia Wei.
面頁冊數:	148 p.
附註:	Source: Dissertation Abstracts International, Volume: 76-09(E), Section: B.
Contained By:	Dissertation Abstracts International76-09B(E).
標題:	Electromagnetics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3700486
ISBN:	9781321704723

Novel Trapping and Scattering of Light in Resonant Nanophotonic Structures.
Hsu, Chia Wei.

Novel Trapping and Scattering of Light in Resonant Nanophotonic Structures. - 148 p.

Source: Dissertation Abstracts International, Volume: 76-09(E), Section: B.

Thesis (Ph.D.)--Harvard University, 2015.

Nanophotonic structures provide unique ways to control light and alter its behaviors in ways not possible in macroscopic structures. In this thesis, we explore novel behaviors of light created by nanophotonic structures, with a common theme on resonance effects. The first half of the thesis focuses on a peculiar type of electromagnetic resonance, where the resonance lifetime diverges to infinity. These states, called bound states in the continuum, remain localized in space even though their frequency lie within a continuum of extended modes. We find such states in photonic crystal slabs and the surface of bulk photonic crystals. We show the conditions necessary for them to exist, and provide the first experimental observation of these unusual states. We also show that these states have a topological nature, with conserved and quantized topological charges that govern their generation, evolution, and annihilation. The second half of the thesis concerns light scattering from resonant nanophotonic structures, where resonances can enhance or suppress scattering at particular wavelengths and angles. We show that multiple resonances in one nanostructure and in the same multipole channel generally lead to a scattering dark state where the structure becomes transparent. Based on the coherent interference from multiple scatterers, we show there are geometries that can achieve a sharp structural color where the hue, saturation, and brightness are all viewing-angle independent. We also invent a new type of transparent display based on wavelength-selective light scattering from nanostructures.

ISBN: 9781321704723Subjects--Topical Terms:

3173223
Electromagnetics.

Novel Trapping and Scattering of Light in Resonant Nanophotonic Structures.
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