Surface-relief and polarization gratings for solar concentrators

被引：42

作者：

de Jong, Ties M. ^{[1
]}

de Boer, Dick K. G. ^{[2
]}

Bastiaansen, Cees W. M. ^{[1
,3
]}

机构：

[1] Eindhoven Univ Technol, NL-5600 MB Eindhoven, Netherlands

[2] Philips Res Europe, NL-5656 AE Eindhoven, Netherlands

[3] Queen Mary Univ London, Dept Mat, London E1 4NS, England

来源：

OPTICS EXPRESS | 2011年 / 19卷 / 16期

关键词：

REGIME DIFFRACTION; LIQUID-CRYSTAL; PHASE GRATINGS; EFFICIENCY; IMPLEMENTATION; DISPLAYS; CRITERIA; SYSTEMS; MODEL;

D O I：

10.1364/OE.19.015127

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Transmission gratings that combine a large diffraction angle with a high diffraction efficiency and a low angular and wavelength dispersion could be used to collect sunlight in a light guide. In this paper we compare the diffractive properties of polarization gratings and classical surface-relief gratings and explore their possible use in solar concentrators. It is found that polarization gratings and surface-relief gratings have qualitatively comparable diffraction characteristics when their thickness parameters are within the same regime. Relatively large grating periods result in high diffraction efficiencies over a wide range of incident angles. For small grating periods the efficiency and the angular acceptance are decreased. Surface-relief gratings are preferred over polarization gratings as in-couplers for solar concentrators. (C) 2011 Optical Society of America

引用

页码：15127 / 15142

页数：16

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