Nonlinear plasmonic antennas
Nonlinear plasmonic antennas
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DOI：
10.1016/j.mattod.2014.05.009
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发表时间：
2014-12-01
期刊：
影响因子：
24.2
通讯作者：
Rockstuhl, Carsten
中科院分区：
文献类型：
--
作者：
Bin Hasan, Shakeeb;Lederer, Falk;Rockstuhl, Carsten
与传统的光学元件相反，由纳米结构金属制成的等离子体天线允许电磁场在远小于光波长的长度尺度上定位。这导致接近天线的电磁场的巨大振幅有利于在中等泵浦功率下已经观察到非线性效应。因此，这些天线在实现纳米级光频率转换和光的全光控制方面表现出了巨大的潜力。这为超快非线性光谱学、传感器件、片上光学频率转换、非线性光学超材料和新型光子源提供了前所未有的机会。在这里，我们回顾了一些最近的进展，利用等离子体天线的潜力，实现强大的非线性应用。
Contrary to traditional optical elements, plasmonic antennas made from nanostructured metals permit the localization of electromagnetic fields on length scales much smaller than the wavelength of light. This results in huge amplitudes for the electromagnetic field close to the antenna being conducive for the observation of nonlinear effects already at moderate pump powers. Thus, these antennas exhibit a promising potential to achieve optical frequency conversion and all-optical control of light at the nano-scale. This opens unprecedented opportunities for ultrafast nonlinear spectroscopy, sensing devices, on-chip optical frequency conversion, nonlinear optical metamaterials, and novel photon sources. Here, we review some of the recent advances in exploiting the potential of plasmonic antennas to realize robust nonlinear applications.