Transmission-reflection decoupling of non-Hermitian photonic doping epsilon-near-zero media

IF 6.5 2区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY

Frontiers of Physics Pub Date : 2023-12-19 DOI:10.1007/s11467-023-1362-7

Yongxing Wang (, ), Jizi Lin (, ), Ping Xu (, )

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Abstract

We present a novel method to achieve the decoupling between the transmission and reflection waves of non-Hermitian doped epsilon-near-zero (ENZ) media by inserting a dielectric slit into the structure. Our method also allows for independent control over the amplitude and the phase of both the transmission and reflection waves through few dopants, enabling us to achieve various optical effects, such as perfect absorption, high-gain reflection without transmission, reflectionless high-gain transmission and reflectionless total transmission with different phases. By manipulating the permittivity of dopants with extremely low loss or gain, we can realize these effects in the same configuration. We also extend this principle to multi-port doped ENZ structures and design a highly reconfigurable and reflectionless signal distributor and generator that can split, amplify, decay and phase-shift the input signal in any desired way. Our method overcomes limitations of optical manipulation in doped ENZ caused by the interdependent nature of the transmission and reflection, and has potential applications in novel photonic devices.

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非赫米提光子掺杂ε近零介质的透射-反射解耦

我们提出了一种新方法，通过在结构上插入介电狭缝来实现非赫米提掺杂ε-近零（ENZ）介质透射波和反射波之间的解耦。我们的方法还可以通过少量掺杂剂独立控制透射波和反射波的振幅和相位，从而实现各种光学效应，如完美吸收、无透射的高增益反射、无反射的高增益透射和不同相位的无反射全透射。通过操纵具有极低损耗或增益的掺杂剂的介电常数，我们可以在相同的配置中实现这些效果。我们还将这一原理扩展到多端口掺杂 ENZ 结构，并设计出一种高度可重新配置的无反射信号分配器和发生器，它能以任何所需的方式对输入信号进行分割、放大、衰减和相移。我们的方法克服了掺杂 ENZ 中因传输和反射相互依存而造成的光学操作限制，并有望应用于新型光子设备。

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来源期刊

Frontiers of Physics PHYSICS, MULTIDISCIPLINARY-

CiteScore

9.20

自引率

9.30%

发文量

898

审稿时长

6-12 weeks

期刊介绍： Frontiers of Physics is an international peer-reviewed journal dedicated to showcasing the latest advancements and significant progress in various research areas within the field of physics. The journal's scope is broad, covering a range of topics that include: Quantum computation and quantum information Atomic, molecular, and optical physics Condensed matter physics, material sciences, and interdisciplinary research Particle, nuclear physics, astrophysics, and cosmology The journal's mission is to highlight frontier achievements, hot topics, and cross-disciplinary points in physics, facilitating communication and idea exchange among physicists both in China and internationally. It serves as a platform for researchers to share their findings and insights, fostering collaboration and innovation across different areas of physics.