Ultrafast and Broadband Terahertz Modulator With Polarization Selectivity

He, Hongchuan; Yin, Ming; Fu, Zhengping; Lu, Yalin; Huang, Qiuping; Cai, Honglei; Zhao, Yi; Lin, Xiaoxia; Cheng, Hao; Ma, Tian; Wang, Jianlin; Huang, Haoliang

doi:10.1109/jphot.2019.2947993

Cited by 5 publications

(1 citation statement)

References 33 publications

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“…Due to the different structure, metal patch and aperture frequency selection surfaces can achieve total reflection or transmission near the frequency of the resonant unit, i.e., band-stop or band-pass characteristics, respectively. Terahertz FSS structures are widely used as filters [9,10,11,12], modulators [13,14,15], polarizers [16,17,18] and sensors [19,20,21]. In recent years, more and more developments have been made in phase change materials which can change the properties of materials through light, heat and electricity.…”

Section: Introductionmentioning

confidence: 99%

A broadband reconfigurable frequency-selective surface in terahertz band based on different metal-insulator transition temperature of VO<sub>2</sub>

Cheng,

Lin,

Chen

et al. 2023

IEICE Electron. Express

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In this paper, a broadband reconfigurable frequency-selective surface (FSS) in terahertz band based on different metal-insulator transition (MIT) temperature of vanadium dioxide (VO2) is proposed. By using different MIT temperature of VO2, the broadband reconfigurable design of the FSS is realized. The results show that the center frequency of the FSS is 2.15 THz and when the temperature is lower than 60 ℃ , the relative bandwidth is 74.19%. When the temperature is between 60℃ and 72℃, the relative bandwidth is 55.59%. Above 72℃, the relative bandwidth is 33.78%. The FSS has broad application prospects in other emerging terahertz fields such as terahertz regulation and communication.

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Section: Introductionmentioning

confidence: 99%

A broadband reconfigurable frequency-selective surface in terahertz band based on different metal-insulator transition temperature of VO<sub>2</sub>

Cheng,

Lin,

Chen

et al. 2023

IEICE Electron. Express

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Modulators for mid-infrared and terahertz light

Herrmann

Gao

Huang

et al. 2020

Journal of Applied Physics

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The rise of mid-infrared and terahertz wave technology over the past two decades has led to incredible insights and potential applications for next-generation optoelectronics. Modulators, which control amplitude, phase, and/or polarization of incident light, are widely used in communications, imaging, and sensing and are crucial for further development of technology functioning in the mid-infrared and terahertz frequency regimes. The lack of natural materials with optical responses in these frequency regimes has led to a surge in engineering efforts to create novel devices and architectures for achieving control over the properties of mid-infrared and terahertz radiation. Major efforts in the field have been devoted to studying carrier concentration modulation, liquid crystals, phase-change materials, and micro-electromechanical systems for controlling the light–matter interaction. Although there has been considerable progress in realizing mid-infrared and terahertz modulators, novel approaches are seeking higher modulation speed, more functionality, and miniaturized size. In this perspective, we review the recent advancements of modulators for mid-infrared and terahertz wavelengths. We discuss various modulation mechanisms, along with their relative performance, and consider future architectures to improve upon the current technology for mid-infrared and terahertz modulation.

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Vacancy tuned coupling in terahertz metamaterial arrays

Wen

Huang

et al. 2022

Opt. Express

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Metamaterials have shown great potential for modulation on the amplitude, phase and polarization of the terahertz wave. Here vacancies were introduced into the metamaterial arrays to tune the mutual interaction between the constituent resonators, which could heavily affect the electromagnetic response of the whole metamaterial arrays. We show that the introduced vacancies in the metamaterial arrays can effectively affect the resonance mode of the metamaterial arrays. Based upon the vacancy mediated coupling, a silicon-metal hybrid metamaterial arrays were designed to achieve active modulation of propagating terahertz waves.

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Ultrafast and Broadband Terahertz Modulator With Polarization Selectivity

Cited by 5 publications

References 33 publications

A broadband reconfigurable frequency-selective surface in terahertz band based on different metal-insulator transition temperature of VO<sub>2</sub>

A broadband reconfigurable frequency-selective surface in terahertz band based on different metal-insulator transition temperature of VO<sub>2</sub>

Modulators for mid-infrared and terahertz light

Vacancy tuned coupling in terahertz metamaterial arrays

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