Beam shaping using genetically optimized two-dimensional photonic crystals

被引：20

作者：

Gagnon, Denis ^{[1
]}

Dumont, Joey ^{[1
]}

Dube, Louis J. ^{[1
]}

机构：

[1] Univ Laval, Fac Sci & Genie, Dept Phys Genie Phys & Opt, Quebec City, PQ G1V 0A6, Canada

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2012年 / 29卷 / 12期

基金：

加拿大自然科学与工程研究理事会;

关键词：

COMPLEX-SOURCE; GENERATION; LASERS; LIGHT;

D O I：

10.1364/JOSAA.29.002673

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose the use of two-dimensional (2D) photonic crystals (PhCs) with engineered defects for the generation of an arbitrary-profile beam from a focused input beam. The cylindrical harmonics expansion of complex-source beams is derived and used to compute the scattered wave function of a 2D PhC via the multiple scattering method. The beam shaping problem is then solved using a genetic algorithm. We illustrate our procedure by generating different orders of Hermite-Gauss profiles, while maintaining reasonable losses and tolerance to variations in the input beam and the slab refractive index. (c) 2012 Optical Society of America

引用

页码：2673 / 2678

页数：6

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