Quantifying metarefraction with confocal lenslet arrays

OPTICS COMMUNICATIONS

卷:284

Article

Maceina, Tautvydas²  Juzeliunas, Gediminas²  Courtial, Johannes¹ 

[1] Univ Glasgow, Sch Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[2] Vilnius Univ, Inst Theoret Phys & Astron, LT-01108 Vilnius, Lithuania

关键词: Confocal lenslet arrays;    METATOYs;    Field of view;    Geometrical optics;    Optical materials;   

DOI  :  10.1016/j.optcom.2011.06.058

来源: Elsevier

【 摘 要 】

METATOYs can change the direction of light in ways that appear to, but do not actually, contravene the laws of wave optics. This direction change applies only to part of the transmitted light beam; the remainder gets redirected differently. For a specific example, namely confocal pairs of rectangular lenslet arrays with no dead area between lenslets, we calculate here the fractions of power of a uniform-intensity light beam incident from a specific (but arbitrary) direction that get re-directed in different ways, and we derive an equation describing this redirection. This will facilitate assessment of the suitability of METATOYs for applications such as solar concentration. Finally, we discuss similarities between the multiple refraction of light at the lenslet arrays and multiple refraction and reflection of cold atoms at a barrier in the presence of the light fields. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

【 授权许可】

Free