White metal-like omnidirectional mirror from porous silicon dielectric multilayers

被引：20

作者：

David Ariza-Flores, A. ^{[2
]}

Gaggero-Sager, L. M. ^{[2
]}

Agarwal, V. ^{[1
]}

机构：

[1] UAEM, CIICAp, Cuernavaca 62210, Morelos, Mexico

[2] UAEM, Dept Phys, Fac Ciencias, Cuernavaca 62210, Morelos, Mexico

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 03期

关键词：

RANGE; REFLECTORS; FREQUENCY; DESIGN;

D O I：

10.1063/1.4738765

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report the design and fabrication of the complete visible range omnidirectional mirror, with a dielectric multilayered structure based on porous silicon (PS). The refractive index profile consisted of Bragg type chirped layers with an increasing thicknesses modulated by a potential envelop function f (x) = Cx(k). The omnidirectional photonic band gap (OPBG) was measured from 396 to 805 nm, with more than 95% of the reflectivity, for 8 degrees and 68 degrees. The theoretical simulations based on the transfer matrix method along with a photographic sequence of the sample confirmed the OPBG for higher incident angles. It was enhanced by a factor of 19 as compared to the last reported visible region OPBG by PS dielectric multilayered structure. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4738765]

引用

页数：3

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