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Optical phenomena in photonic and po...

Wang, Xiwen.

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Optical phenomena in photonic and polaritonic crystals.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Optical phenomena in photonic and polaritonic crystals./
作者:	Wang, Xiwen.
面頁冊數:	83 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-07, Section: B, page: 3778.
Contained By:	Dissertation Abstracts International66-07B.
標題:	Physics, Optics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3181601
ISBN:	9780542219597

Optical phenomena in photonic and polaritonic crystals.
Wang, Xiwen.

Optical phenomena in photonic and polaritonic crystals. - 83 p.

Source: Dissertation Abstracts International, Volume: 66-07, Section: B, page: 3778.

Thesis (Ph.D.)--Boston College, 2005.

Photonic crystals, also known as photonic band-gap materials, are periodic structures that have a band gap that forbids propagation of a certain frequency range of light. The richness of the photonic band structures due to the periodicity of the permittivity also enables one to control light with amazing facility and produces effects that are impossible with conventional optics. These novel optical phenomena include negative refraction, subwavelength lensing, and rapid photon flux switching, etc., which are the main results of this thesis.

ISBN: 9780542219597Subjects--Topical Terms:

1018756
Physics, Optics.

Optical phenomena in photonic and polaritonic crystals.
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245 1 0 $a Optical phenomena in photonic and polaritonic crystals.
300 $a 83 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-07, Section: B, page: 3778.
500 $a Adviser: Krzysztof Kempa.
502 $a Thesis (Ph.D.)--Boston College, 2005.
520 $a Photonic crystals, also known as photonic band-gap materials, are periodic structures that have a band gap that forbids propagation of a certain frequency range of light. The richness of the photonic band structures due to the periodicity of the permittivity also enables one to control light with amazing facility and produces effects that are impossible with conventional optics. These novel optical phenomena include negative refraction, subwavelength lensing, and rapid photon flux switching, etc., which are the main results of this thesis.
520 $a We first demonstrate the unrestricted negative refraction and lensing effects in a two dimensional triangular photonic crystal. In a particular frequency range, this kind of photonic crystal acts as a real left handed metamaterial, with an effective refractive index neff = -1, therefore, the Veselago-Pendry superlensing effect that overcomes the classical diffraction limit is realized. We further propose a systematic way to increase this resolution, at an essentially fixed frequency, by employing a hierarchy of crystals of the same structure, and the same lattice constant, but with an increasingly complex basis. Secondly, we study the surface and disorder effects on this lens. We show that, excitation of surface modes helps the transmission of evanescent waves which facilitates the subwavelength lensing effect. Thirdly, we show that these novel effects can occur in the optical frequency regime in a two-dimensional polaritonic crystal. Fourthly, we propose a rapid photon flux switching in a two dimensional photonic crystal by using defects in an otherwise perfect crystal. This defect localization can result in a sharp transition between the state of the out-of-plane light propagation through the entire photonic crystal, and the state in which light propagates only along the defect channels.
590 $a School code: 0016.
650 4 $a Physics, Optics. $3 1018756
650 4 $a Biology, Molecular. $3 1017719
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