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Optics at interfaces: Ultra-thin col...

Kats, Mikhail A.

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Optics at interfaces: Ultra-thin color coatings, perfect absorbers, and metasurfaces.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Optics at interfaces: Ultra-thin color coatings, perfect absorbers, and metasurfaces./
作者:	Kats, Mikhail A.
面頁冊數:	181 p.
附註:	Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.
Contained By:	Dissertation Abstracts International75-06B(E).
標題:	Optics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3611545
ISBN:	9781303724282

Optics at interfaces: Ultra-thin color coatings, perfect absorbers, and metasurfaces.
Kats, Mikhail A.

Optics at interfaces: Ultra-thin color coatings, perfect absorbers, and metasurfaces. - 181 p.

Source: Dissertation Abstracts International, Volume: 75-06(E), Section: B.

Thesis (Ph.D.)--Harvard University, 2014.

This item is not available from ProQuest Dissertations & Theses.

The vast majority of optical components and devices in use today can be grouped under the umbrella of ``bulk optics''; i.e. they generally have a non-negligible thickness compared to the wavelength of light. This is true of components from lenses to wave plates to Fabry-Perot etalons, all of which need sufficient thickness such that light waves can accumulate an appropriate amount of phase upon propagation through the structure. In this thesis, we develop and explore a variety of optical components that are thin compared to the wavelength of light and lie at the interface between two materials (i.e. a substrate and air). We explore approaches to filter, absorb, redirect, and re-shape light with flat, ultra-thin structures which are easy to fabricate with modern micro- and nanofabrication techniques. In the first section of this entitled "Lossy optical coatings and perfect absorbers", we show that thin film interference effects can be observed in appropriately-designed films even if the films are significantly thinner than a quarter of the wavelength of light in the material. We use these films to demonstrate color coatings and multi-color images in the visible, tunable perfect absorbers and anomalous thermal emitters in the infrared, and propose a variety of applications ranging from ultra-thin photodetectors and solar cells to modulators and microbolometers. In the second section entitled "Controlling light propagation with optical antenna metasurfaces", we develop a class of metasurfaces comprising resonant plasmonic antennas, which can imprint nearly-arbitrary distributions of amplitude, phase, and polarization on a light beam. These metasurfaces, which can are thinner than 1% of the wavelength of light, enable the design flat optical components including lenses, axicons, spiral phase plates, blazed gratings, and wave plates, which we demonstrate in the near- and mid-infrared spectral ranges.

ISBN: 9781303724282Subjects--Topical Terms:

517925
Optics.

Optics at interfaces: Ultra-thin color coatings, perfect absorbers, and metasurfaces.
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500 $a Adviser: Federico Capasso.
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520 $a The vast majority of optical components and devices in use today can be grouped under the umbrella of ``bulk optics''; i.e. they generally have a non-negligible thickness compared to the wavelength of light. This is true of components from lenses to wave plates to Fabry-Perot etalons, all of which need sufficient thickness such that light waves can accumulate an appropriate amount of phase upon propagation through the structure. In this thesis, we develop and explore a variety of optical components that are thin compared to the wavelength of light and lie at the interface between two materials (i.e. a substrate and air). We explore approaches to filter, absorb, redirect, and re-shape light with flat, ultra-thin structures which are easy to fabricate with modern micro- and nanofabrication techniques. In the first section of this entitled "Lossy optical coatings and perfect absorbers", we show that thin film interference effects can be observed in appropriately-designed films even if the films are significantly thinner than a quarter of the wavelength of light in the material. We use these films to demonstrate color coatings and multi-color images in the visible, tunable perfect absorbers and anomalous thermal emitters in the infrared, and propose a variety of applications ranging from ultra-thin photodetectors and solar cells to modulators and microbolometers. In the second section entitled "Controlling light propagation with optical antenna metasurfaces", we develop a class of metasurfaces comprising resonant plasmonic antennas, which can imprint nearly-arbitrary distributions of amplitude, phase, and polarization on a light beam. These metasurfaces, which can are thinner than 1% of the wavelength of light, enable the design flat optical components including lenses, axicons, spiral phase plates, blazed gratings, and wave plates, which we demonstrate in the near- and mid-infrared spectral ranges.
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