Deeply Subwavelength Integrated Excitonic van der Waals Nanophotonics
Deeply Subwavelength Integrated Excitonic van der Waals Nanophotonics
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DOI：
10.1364/optica.499059
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发表时间：
2023-02
期刊：
影响因子：
10.4
通讯作者：
H. Ling;Arnab Manna;Jialiang Shen;Ho-Ting Tung;David Sharp;Johannes E. Froch;S. Dai;A. Majumdar;Artur R. Davoyan
中科院分区：
文献类型：
--
作者：
H. Ling;Arnab Manna;Jialiang Shen;Ho-Ting Tung;David Sharp;Johannes E. Froch;S. Dai;A. Majumdar;Artur R. Davoyan
光的波动性质设定了一个基本的衍射极限，挑战了尺寸明显小于波长的纳米结构中对光的限制和控制。在这里，我们展示了尺寸小到~\lambda/16(在1000 nm激发波长下~60 nm)的van der Waals MoS_2纳米光子器件。这种深亚波长光限制是通过利用MoS2激子和光子之间的耦合来实现的。我们通过远场和近场测量验证了深亚波长光控制。我们的近场测量揭示了MoS_2纳米器件中激发、演化和导向场的详细成像，而我们的远场研究考察的是高度受限的集成光子学。激子驱动的纳米光子学可以极大地减小集成光子器件和光电子电路的尺寸，在光学信息科学和工程中具有潜在的应用前景。
The wave nature of light sets a fundamental diffraction limit that challenges confinement and control of light in nanoscale structures with dimensions significantly smaller than the wavelength. Here, we demonstrate van der Waals MoS_2 nano-photonic devices with dimensions as small as ~ \lambda/16 (~60 nm at 1000 nm excitation wavelength). This deep subwavelength light confinement is achieved by exploiting the coupling between MoS_2 excitons and photons. We validate deep subwavelength light control via far- and near-field measurements. Our near-field measurements reveal detailed imaging of excitation, evolution, and guidance of fields in MoS_2 nanodevices, whereas our far-field study examines highly confined integrated photonics. Exciton-driven nano-photonics at a fraction of a wavelength demonstrated here could dramatically reduce the size of integrated photonic devices and opto-electronic circuits with potential applications in optical information science and engineering.