Nanostructured Holograms for Broadband Manipulation of Vector Beams
Nanostructured Holograms for Broadband Manipulation of Vector Beams
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DOI：
10.1021/nl402039y
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发表时间：
2013-09-01
期刊：
影响因子：
10.8
通讯作者：
Capasso, Federico
中科院分区：
文献类型：
--
作者：
Lin, Jiao;Genevet, Patrice;Capasso, Federico
我们报道了一种新型全息界面，它能够在宽波长范围内操纵光的三个基本特性（相位，振幅和偏振）。该设计策略依赖于用亚波长孔径阵列取代传统全息图的大开口，定向于局部选择特定的偏振状态。因此，由此产生的光学元件可以被视为两个具有非常不同长度尺度的独立结构的叠加，也就是说，一个全息图，其每个孔径都充满纳米级开口，只传输所需的偏振状态：作为实现，我们制造了一个纳米结构全息板，它可以从圆偏振入射光产生径向偏振光束，并且我们证明它可以宽波长范围。单个全息界面的能力，同时塑造振幅，操作在一个阶段，光的偏振可以在光子学中找到广泛的应用。
We report a new type of holographic interface, which is able to manipulate the three fundamental properties of light (phase, amplitude, and polarization) over a broad wavelength range. The design strategy relies on replacing the large openings of conventional holograms by arrays of subwavelength apertures, oriented to locally select a particular state of polarization. The resulting optical element can therefore be viewed as the superposition of two independent structures with very different length scales, that is, a hologram with each of its apertures filled with nanoscale openings to only transmit a desired state of polarization: As an implementation, we fabricated a nanostructured holographic plate that can generate radially polarized optical beams from circularly polarized incident light, and we demonstrated that it can broad range of wavelengths. The ability of a single holographic interface to simultaneously shape the amplitude, operate over a phase, and polarization of light can find widespread applications in photonics.