Cavity enhanced terahertz modulation

被引：18

作者：

Born, N. ^{[1
,2
,3
]}

Scheller, M. ^{[1
]}

Koch, M. ^{[2
,3
]}

Moloney, J. V. ^{[1
]}

机构：

[1] Univ Arizona, Coll Opt Sci, Tucson, AZ 85721 USA

[2] Univ Marburg, Fac Phys, D-35032 Marburg, Germany

[3] Univ Marburg, Ctr Mat Sci, D-35032 Marburg, Germany

来源：

APPLIED PHYSICS LETTERS | 2014年 / 104卷 / 10期

关键词：

PHOTONIC CRYSTALS; SILICON; METAMATERIALS; GRAPHENE; FILTER;

D O I：

10.1063/1.4868416

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a versatile concept for all optical terahertz (THz) amplitude modulators based on a Fabry-Perot semiconductor cavity design. Employing the high reflectivity of two parallel meta-surfaces allows for trapping selected THz photons within the cavity and thus only a weak optical modulation of the semiconductor absorbance is required to significantly damp the field within the cavity. The optical switching yields to modulation depths of more than 90% with insertion efficiencies of 80%. (C) 2014 AIP Publishing LLC.

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页数：3

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