All-optical switching at the Fano resonances in subwavelength gratings with very narrow slits

被引：44

作者：

D'Aguanno, G. ^{[1
,2
]}

de Ceglia, D. ^{[1
,2
]}

Mattiucci, N. ^{[1
,2
]}

Bloemer, M. J. ^{[2
]}

机构：

[1] AEgis Technol, Nanogenesis Div, Huntsville, AL 35806 USA

[2] Charles M Bowden Lab, Huntsville, AL 35898 USA

来源：

OPTICS LETTERS | 2011年 / 36卷 / 11期

关键词：

THIN-FILMS; ABSORPTION;

D O I：

10.1364/OL.36.001984

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We theoretically discuss all-optical switching at the Fano resonances of subwavelength gratings made of a chalcogenide glass (As2S3). Particular attention is devoted to the case in which the grating possesses extremely narrow slits (channels ranging from a similar to 10nm to a similar to 40nm). The remarkable local field enhancement available in these situations conspires to yield low-threshold switching intensities (similar to 50MW/cm(2)) at telecommunication wavelengths for extremely thin (d similar to 200nm) gratings when a realistic value of the As2S3 cubic nonlinearity is used. (C) 2011 Optical Society of America

引用

页码：1984 / 1986

页数：3

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