All-silicon omnidirectional mirrors based on one-dimensional photonic crystals

被引:123
作者
Bruyant, A
Lérondel, G
Reece, PJ
Gal, M
机构
[1] Univ Technol Troyes, Lab Nanotechnol & Instrumentat Opt, CNRS, FRE 2671, F-10010 Troyes, France
[2] Univ New S Wales, Sch Phys, Sydney, NSW 2052, Australia
关键词
D O I
10.1063/1.1574403
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report on the fabrication of monolithic omnidirectional mirrors based on one-dimensional photonic crystals. The mirrors are comprised of chirped and unchirped multiple layers of microporous silicon. Porosities have been chosen to achieve an optimal low refractive index n(L) similar to1.5 and a high refractive index n(H) similar to 2.55. Unchirped structures, centered in the near-infrared, exhibit an omnidirectional reflection band of 100 nm, in agreement with the calculated photonic band structure. Chirped structures exhibit an enlarged omnidirectional stop band (340 nm). Given the possibility of easily tailoring the optical thickness of porous silicon, this material is shown to be very practical for engineering omnidirectional mirrors. (C) 2003 American Institute of Physics.
引用
收藏
页码:3227 / 3229
页数:3
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