一、本期重点：
doi: 10.1038/nature12217
published：2013.6.20
内容介绍：
目前所做出的适合日常应用的全息视频显示器往往速度慢、面积小、成本高、而且观看角度受限。Daniel Smalley等人利用各向异性“漏模”空间光调制器的有用光操纵特性制成了有可能绕过所有这些障碍的装置。他们所做的计算表明，该技术可将一台全息视频显示器的成本（不包括光源）降到500美元以下。其他可能的应用包括光刻、显微镜、光遗传学和显微操纵等。
该技术主要应用了导波光学相关理论。图一是各向异性“漏模”空间光调制器的结构，铌酸锂基底上集成了了质子交换波导管，尾部安装声波换能器。多个波导管集成在一起，全息信息耦合在声波信号中，输出信号会发生相应变化。
由此制造的空间光调制器可以达到更高的带宽，更低的衍射角，高可扩展性等一系列优点，几乎可以解决现在的各方面困难。
图一 各向异性“漏模”空间光调制器结构
2.含有多个二维信息模式的三维物体(Three-dimensional volume containing multiple two-dimensional information patterns)【Scientific Reports】
doi:10.1038/srep01931
published：2013.6.4
内容介绍：
文章提出了一种在一个三维物体中记录多个二维图片的算法。每幅二维图像只能从特定方向进行观测，其它图像仅以背景噪声出现；同时这种算法理论上可以记录无限多幅图像。图二为效果展示。
这种技术在数字媒体、数字标牌和加密技术等领域有应用前景。
图二 （a）三维激光晶体在非投射轴的图像（b）记录的原始图片（c）从投射轴观察到的图像信息
二、简讯：
doi:10.1038/nphoton.2013.117
published：2013.5.30
Abstract:
Using a pump–probe technique, scientists have experimentally demonstrated a nonlinear imaging scheme that permits the super-resolution imaging of nonfluorescent samples, making it promising for use with unstained specimens
doi:10.1126/science.1238630
published：2013.6.21
Abstract:
Additional electrodes allow for the selection of the charge-carrier type in silicon nanowire 3D transistors and the creation of highly compact logic gates
doi: 10.1364/OL.38.002035
published：2013.6.4
Abstract:
We present a method of achieving a wide-angle, lightweight, optical see-through, distortion-free head-mounted display (HMD) by using two similar ellipsoids. An HMD that achieves a single channel field-of-view (FOV) of 120°×120° with a 6 mm eye box and a total binocular FOV of 160°×120° with an 80° field overlap is designed as an example. This method can solve the complex tiling problem and the distortion problem of other catadioptric structures. This structure is used to offset distortion and correct aberrations.
doi: 10.1364/OE.21.00A585
published：2013.5.9
Abstract:
In this work solar cell anti-reflection coatings tuned to give a specific hue under solar illumination are investigated. We demonstrate that it is possible to form patterned coatings with large color contrast and high transmittance. We use colorimetric and thin film optics models to explore the relationship between the color and performance of bilayer anti-reflection coatings on Si, and predict the photocurrent generation from an example Si solar cell. The colorimetric predictions were verified by measuring a series of coatings deposited on Si substrates. Finally, a patterned Si sample was produced using a simple, low-cost photolithography procedure to selectively etch only the top layer of a bilayer coating to demonstrate a high-performance anti-reflection coating with strong color contrast.
供稿人:王恒
