Near-field radiation from a ridge waveguide transducer in the vicinity of a solid immersion lens

被引：49

作者：

Sendur, K ^{[1
]}

Peng, C ^{[1
]}

Challener, W ^{[1
]}

机构：

[1] Seagate Technol Res Ctr, Pittsburgh, PA 15222 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.94.043901

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A near-field optical system is investigated to improve the transmission efficiency of near-field transducers. A ridge waveguide is placed adjacent to a solid immersion lens (SIL) but separated by a low-index dielectric layer. The incident electric field near the focus of the SIL is determined by the Richards-Wolf vector field equations. The finite element method is used to solve Maxwell's equations. A spot size of 31 nm is obtained. The maximum value of the absorbed optical power density in the recording medium is 7.51x10(-4) mW/nm(3) for a 100 mW input power.

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页数：4

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