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基于光激发铁电超晶格的太赫兹电调制器。

Electrical terahertz modulator based on photo-excited ferroelectric superlattice.

作者信息

Ji Jie, Zhou Siyan, Zhang Jingcheng, Ling Furi, Yao Jianquan

机构信息

Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan, 430074, China.

School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China.

出版信息

Sci Rep. 2018 Feb 8;8(1):2682. doi: 10.1038/s41598-018-21095-5.

DOI:10.1038/s41598-018-21095-5
PMID:29422668
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5805752/
Abstract

The transmission and dielectric spectra of ferroelectric STO/PT superlattice on Si substrate under simultaneous external optical and electric field were investigated and compared at room temperature. Results found that when with an optical field, the electric field realized an effective modulation on the transmission, which displayed a diode property. In addition, a comprehensive model combined with Debye relaxation and Lorentz model was used to analyze the dielectric spectra, variation of the soft mode with external field was put emphasis on exploring.

摘要

在室温下，研究并比较了硅衬底上铁电STO/PT超晶格在同时施加外部光场和电场时的透射光谱和介电光谱。结果发现，当存在光场时，电场对透射实现了有效调制，呈现出二极管特性。此外，采用结合德拜弛豫和洛伦兹模型的综合模型来分析介电光谱，重点探索软模随外部场的变化。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/b523f96c08bc/41598_2018_21095_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/a491f6eea5db/41598_2018_21095_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/404df91745f8/41598_2018_21095_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/39f4b58ae110/41598_2018_21095_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/43a7fadcda29/41598_2018_21095_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/8a54eeda915d/41598_2018_21095_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/e7233a468cea/41598_2018_21095_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/b523f96c08bc/41598_2018_21095_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/a491f6eea5db/41598_2018_21095_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/404df91745f8/41598_2018_21095_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/39f4b58ae110/41598_2018_21095_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/43a7fadcda29/41598_2018_21095_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/8a54eeda915d/41598_2018_21095_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/e7233a468cea/41598_2018_21095_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/deec/5805752/b523f96c08bc/41598_2018_21095_Fig7_HTML.jpg

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本文引用的文献

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Giant tunnelling electroresistance in metal/ferroelectric/semiconductor tunnel junctions by engineering the Schottky barrier.通过工程化肖特基势垒实现金属/铁电体/半导体隧道结中的巨型隧道电阻效应。
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Subterahertz dielectric relaxation in lead-free Ba(Zr,Ti)O3 relaxor ferroelectrics.无铅Ba(Zr,Ti)O3弛豫铁电体中的亚太赫兹介电弛豫
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A New Ba0.6 Sr0.4 TiO3 -Silicon Hybrid Metamaterial Device in Terahertz Regime.太赫兹频段的新型 Ba0.6Sr0.4TiO3-硅混合超材料器件
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Optically tuned terahertz modulator based on annealed multilayer MoS2.基于退火多层二硫化钼的光学调谐太赫兹调制器。
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