Research on Design of Tri-color Shift Device.

Research on Design of Tri-color Shift Device.
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三色偏移装置的设计研究

DOI:
10.1186/s11671-016-1699-8
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发表时间:
2016-12
影响因子:
--
通讯作者:
Peng W
Peng W
中科院分区:
材料科学3区
文献类型:
--
作者:
Xu P;Yuan X;Huang H;Yang T;Huang Y;Zhu T;Tang S;Peng W

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提出了一种基于单周期嵌入式亚波长一维矩形结构的方位调谐三色移器件。可以同时实现TE和TM偏振的高反射效率。在60°斜入射条件下,蓝光(方位角24°)、绿色(方位角63°)和红光(方位角90°)波段的反射效率分别达到85%、86%和100%.研究了器件周期、沟槽深度、涂层厚度、入射角等因素对反射特性的影响规律,论证了器件的可行性。所提出的器件使用简单的结构实现了自然光的三色偏移。它具有高效率和良好的安全性。这种装置可以通过现有的压花和涂覆技术来制造。这些突破了双色移防伪技术的极限,在光变图像防伪领域有着广阔的应用前景。
An azimuth-tuned tri-color shift device based on an embedded subwavelength one-dimensional rectangular structure with single period is proposed. High reflection efficiencies for both TE and TM polarizations can be achieved simultaneously. Under an oblique incidence of 60°, the reflection efficiencies can reach up to 85, 86, and 100 % in blue (azimuth of 24°), green (azimuth of 63°), and red (azimuth of 90°) waveband, respectively. Furthermore, the laws of influence of device period, groove depth, coating thickness, and incident angle on reflection characteristics are investigated and exposed, and feasibility of the device is demonstrated. The proposed device realizes tri-color shift for natural light using a simple structure. It exhibits high efficiency as well as good security. Such a device can be fabricated by the existing embossing and coating technique. All these break through the limit of bi-color shift anti-counterfeiting technology and have great applications in the field of optically variable image security.
DOI: 10.1364/oe.21.012495
发表时间: 2013-05-20
期刊: OPTICS EXPRESS
影响因子: 3.8
作者:
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通讯作者: Magnusson, Robert
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发表时间: 2012-12-01
影响因子: 0.4
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期刊: NANO-MICRO LETTERS
影响因子: 26.6
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DOI: 10.1364/ol.37.000004
发表时间: 2012-01-01
期刊: OPTICS LETTERS
影响因子: 3.6
作者:
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通讯作者: Liu, Wenxia