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yexuqing

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yznian

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帖子真精彩!
已经收录到淘贴专辑《材料学前沿、发现、猜想》
2楼2011-09-06 09:23:31
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ycjiaxin1981

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顶一下
楼主有文章的链接吗?
3楼2011-09-27 10:45:13
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imrsfb

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引用回帖:
3楼: Originally posted by ycjiaxin1981 at 2011-09-27 10:45:13:
顶一下
楼主有文章的链接吗?

Published Online September 1 2011
< Science Express Index
Science DOI: 10.1126/science.1210713

    Research Article

Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction

    Nanfang Yu1,
    Patrice Genevet1,2,
    Mikhail A. Kats1,
    Francesco Aieta1,3,
    Jean-Philippe Tetienne1,4,
    Federico Capasso1,
    Zeno Gaburro1,5

+ Author Affiliations

    1School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.
    2Institute for Quantum Studies and Department of Physics, Texas A&M University, College Station, TX 77843, USA.
    3Dipartimento di Fisica e Ingegneria dei Materiali e del Territorio, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy.
    4Laboratoire de Photonique Quantique et Moléculaire, Ecole Normale Supérieure de Cachan and CNRS, 94235 Cachan, France.
    5Dipartimento di Fisica, Università degli Studi di Trento, via Sommarive 14, 38100 Trento, Italy.

Abstract

Conventional optical components rely on gradual phase shifts accumulated during light propagation to shape light beams. New degrees of freedom are attained by introducing abrupt phase changes over the scale of the wavelength. A two-dimensional array of optical resonators with spatially varying phase response and subwavelength separation can imprint such phase discontinuities on propagating light as it traverses the interface between two media. Anomalous reflection and refraction phenomena are observed in this regime in optically thin arrays of metallic antennas on silicon with a linear phase variation along the interface, in excellent agreement with generalized laws derived from Fermat's principle. Phase discontinuities provide great flexibility in the design of light beams as illustrated by the generation of optical vortices using planar designer metallic interfaces.

    Received for publication 5 July 2011.
    Accepted for publication 19 August 2011.

文章链接:
http://seas.harvard.edu/capasso/ ... 10_1210713_2011.pdf
4楼2011-09-28 18:09:17
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imrsfb

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lchpy(金币+1): thanks for sharing 2011-09-29 14:45:59
very interesting work!

5楼2011-09-28 18:14:02
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ycjiaxin1981

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学习了,多谢了
6楼2011-09-29 14:14:55
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meinv

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说的那么高深,也就是蛾眼结构吗
7楼2015-01-29 09:30:06
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