Circularly polarized light detection with hot electrons in chiral plasmonic metamaterials.
Circularly polarized light detection with hot electrons in chiral plasmonic metamaterials.
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DOI：
10.1038/ncomms9379
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发表时间：
2015-09-22
影响因子：
16.6
通讯作者：
Valentine J
中科院分区：
文献类型：
--
作者：
Li W;Coppens ZJ;Besteiro LV;Wang W;Govorov AO;Valentine J
圆偏振光用于各种光学技术和设备中。然而，使用传统的光学系统来产生、分析和检测圆偏振光涉及多个光学元件，这使得实现微型和集成器件具有挑战性。虽然最近已经展示了许多用于操纵圆偏振光的超紧凑光学元件，但是开发高效且高选择性的圆偏振光光电检测器仍然具有挑战性。在这里，我们报告了一个超紧凑的圆偏振光探测器，结合了大工程手性，实现使用手性等离子体超材料，热电子注入。我们证明了检测器的能力，区分左右手圆偏振光，而无需使用额外的光学元件。这种光电探测器的实现可以提高光纤和自由空间通信的安全性，以及使用高度集成的光子平台的圆偏振光的发射，成像和传感应用。 圆偏振光的分析和检测涉及多个光学元件的使用。在这里，作者展示了一个超紧凑的圆偏振光探测器，使用热电子注入的手性等离子体超材料，实现其在集成光子平台上的实现。
Circularly polarized light is utilized in various optical techniques and devices. However, using conventional optical systems to generate, analyse and detect circularly polarized light involves multiple optical elements, making it challenging to realize miniature and integrated devices. While a number of ultracompact optical elements for manipulating circularly polarized light have recently been demonstrated, the development of an efficient and highly selective circularly polarized light photodetector remains challenging. Here we report on an ultracompact circularly polarized light detector that combines large engineered chirality, realized using chiral plasmonic metamaterials, with hot electron injection. We demonstrate the detector's ability to distinguish between left and right hand circularly polarized light without the use of additional optical elements. Implementation of this photodetector could lead to enhanced security in fibre and free-space communication, as well as emission, imaging and sensing applications for circularly polarized light using a highly integrated photonic platform. Analysis and detection of circularly polarized light involves the use of multiple optical elements. Here, the authors demonstrate an ultracompact circularly polarized light detector using chiral plasmonic metamaterials with hot electron injection, realizing its implementation on an integrated photonic platform.