Thermal non-equilibrium process for nonreciprocity with dual-TE/single-TM peaks

IF 5.3 1区 数学 Q1 MATHEMATICS, INTERDISCIPLINARY APPLICATIONS
Yuqing Xu, Bo Wang, Jing Ye, Jinyun Zhou
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Abstract

In this study, we present a nonreciprocal thermal emitter with dual-polarization capabilities, utilizing a monolayer silicon ring array featuring circular voids. The device demonstrates nonreciprocal behavior under both transverse electric (TE) and transverse magnetic (TM) polarizations, displaying two distinct nonreciprocal peaks in TE polarization and a single peak in TM polarization. Rigorous coupled-wave analysis (RCWA) and validation through coupled-mode theory (CMT) confirm high nonreciprocal efficiency in the mid-infrared region. Specifically, under TE polarization, the two nonreciprocal peaks are observed at wavelengths of 15.074 μm and 15.228 μm, yielding nonreciprocal efficiencies of 94.48 % and 95.65 %, respectively. Under TM polarization, the nonreciprocal peak is positioned at 15.127 μm, with an efficiency of 94.58 %. Allowing for functional differentiation based on the polarization of the incident light. This dual-polarization feature significantly broadens its application potential in thermal management, energy harvesting, and infrared camouflage, particularly enabling more efficient energy conversion and radiation control at small incident angles. Our work offers new insights for future multifunctional nonreciprocal thermal emitters.
双te /单tm峰非互易的热非平衡过程
在这项研究中,我们提出了一种具有双极化能力的非互易热发射器,利用具有圆形空隙的单层硅环阵列。该器件在横向电(TE)和横向磁(TM)极化下均表现出非倒易行为,在横向电(TE)极化中表现出两个明显的非倒易峰,而在横向磁(TM)极化中表现出一个单峰。严格的耦合波分析(RCWA)和耦合模式理论(CMT)验证了中红外区域的高非倒易效率。在TE极化下,在15.074 μm和15.228 μm波长处存在两个非倒易峰,非倒易效率分别为94.48%和95.65%。在TM极化下,非倒易峰位于15.127 μm处,效率为94.58%。允许基于入射光偏振的功能区分。这种双偏振特性大大拓宽了其在热管理、能量收集和红外伪装方面的应用潜力,特别是在小入射角下实现更有效的能量转换和辐射控制。我们的工作为未来的多功能非互易热辐射体提供了新的见解。
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来源期刊
Chaos Solitons & Fractals
Chaos Solitons & Fractals 物理-数学跨学科应用
CiteScore
13.20
自引率
10.30%
发文量
1087
审稿时长
9 months
期刊介绍: Chaos, Solitons & Fractals strives to establish itself as a premier journal in the interdisciplinary realm of Nonlinear Science, Non-equilibrium, and Complex Phenomena. It welcomes submissions covering a broad spectrum of topics within this field, including dynamics, non-equilibrium processes in physics, chemistry, and geophysics, complex matter and networks, mathematical models, computational biology, applications to quantum and mesoscopic phenomena, fluctuations and random processes, self-organization, and social phenomena.
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