The focusing performance of an aperiodic double layer metallic grating

Long Ma; Jie Lin; Peng Jin; Philip Prewett; Zhengang Lu; Jiubin Tan

doi:10.1016/j.mee.2014.05.033

The focusing performance of an aperiodic double layer metallic grating

Long Ma, Jie Lin, Peng Jin, Philip Prewett, Zhengang Lu, Jiubin Tan

Mechanical Engineering

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Abstract

In this paper, a double-layer aperiodic metallic grating is designed and the focusing performance is numerically researched using the finite-difference time-domain method. A sub-wavelength focusing spot is achieved and the depth of focus is twice the length of the incident wavelength. With its ease of fabrication, the designed aperiodic double-layer metallic grating has great potential in applications such as data storage, laser direct writing and optical probe.

Original language	English
Pages (from-to)	112-116
Journal	Microelectronic Engineering
Volume	123
Early online date	2 Jun 2014
DOIs	https://doi.org/10.1016/j.mee.2014.05.033
Publication status	Published - 1 Jul 2014

Keywords

Focusing performance
Aperiodic grating
Metallic subwavelength structure

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10.1016/j.mee.2014.05.033

Prewett_Focusing_performance_Microelectronic_Engineering_2014
NOTICE: this is the author’s version of a work that was accepted for publication in Microelectronic Engineering. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Microelectronic Engineering, Volume 123, 1 July 2014, Pages 112–116 DOI: 10.1016/j.mee.2014.05.033 Checked for repository 28/10/2014
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http://linkinghub.elsevier.com/retrieve/pii/S0167931714002408

Cite this

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AB - In this paper, a double-layer aperiodic metallic grating is designed and the focusing performance is numerically researched using the finite-difference time-domain method. A sub-wavelength focusing spot is achieved and the depth of focus is twice the length of the incident wavelength. With its ease of fabrication, the designed aperiodic double-layer metallic grating has great potential in applications such as data storage, laser direct writing and optical probe.

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The focusing performance of an aperiodic double layer metallic grating

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Keywords

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