Progress in Nano-Electro Optics III: Industrial Applications and Dynamics of the Nano-Optical SystemPaperback, 19 October 2010

Progress in Nano-Electro Optics III: Industrial Applications and Dynamics of the Nano-Optical System
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Part of Series
Springer Optical Sciences
Part of Series
Springer Series in Optical Sciences
Part of Series
Springer Series in Optical Sciences Springer Series in Optic
Print Length
224 pages
Language
English
Publisher
Springer
Date Published
19 Oct 2010
ISBN-10
3642059163
ISBN-13
9783642059162

Description

Near-?eld optical recording is a promising way to realize a recording density 2 of over 1 Tb/in . In this chapter, we focused on the near-?eld optical head, which is a key device for near-?eld optical recording. First, we explained the technical issues regarding the near-?eld optical head and introduced some solutions to these issues. We focused on a highly e?cient near-?eld optical head that uses a wedge-shaped metallic plate, and described its optical pr- erties based on a simulation using a ?nite-di?erence time-domain method. The simulation results con?rmed that a strong optical near ?eld is generated at the apex of the metallic plate when a plasmon is excited in the metallic plate. When a TbFeCo recording medium was placed 10 nm from the ne- ?eld optical head, the size of the optical spot was 30 nm, which corresponds 2 to an areal recording density of approximately 1 Tb/in . The e?ciency was 20% if we assume that the incident beam was a Gaussian beam with a full width at half-maximum of 1µ m. Furthermore, we discussed an optical head using two metallic plates. We con?rmed through our simulation that a highly localized optical near ?eld was generated at the gap when the plasmon was excited in the metallic plates. The distribution was 5 nm by 5 nm when the two apices were separated by 5 nm.

Product Details

Book Format:
Paperback
Country of Origin:
NL
Date Published:
19 October 2010
Dimensions:
23.39 x 15.6 x 1.3 cm
ISBN-10:
3642059163
ISBN-13:
9783642059162
Language:
English
Location:
Berlin, Heidelberg
Pages:
224
Publisher:
Springer
Weight:
344.73 gm

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