Efficient excitation of a monopole optical transducer for near-field recording

被引：9
|
作者：
Peng, Chubing [1 ]
机构：
[1] Seagate Technol, Bloomington, MN 55435 USA
来源：
JOURNAL OF APPLIED PHYSICS | 2012年 / 112卷 / 04期
关键词：
SOLID IMMERSION MIRROR; LIGHT TRANSMISSION; ELECTROMAGNETIC DIFFRACTION; DATA-STORAGE; IMAGE FIELD; WAVELENGTH; SYSTEMS; GUIDES;
D O I：
10.1063/1.4747912
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
An optical near-field transducer composed of a rectangular patch and a protruded peg has been numerically studied for heat-assisted magnetic recording. This transducer strongly interacts with a planar solid immersion focusing field and efficiently couples optical energy into a recording medium in a region determined by the peg cross-section. The transducer is excited through the electric field predominantly normal to its edges. The optimal size of the rectangular patch is found to be a half-wave optical antenna in height and between half-wave and full-wave in width. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4747912]
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页数：6
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