An Optically Tunable THz Modulator Based on Nanostructures of Silicon Substrates.

Chen Mo, Jingbo Liu, Dongshan Wei, Honglei Wu, Qiye Wen, Dongxiong Ling

Abstract read

In one paragraph

Article in Sensors (Basel, Switzerland), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Chen MoSchool of Electrical Engineering and Intelligentization, Dongguan University of Technology, Dongguan 523808, China.ORCID 0000-0002-4247-1252

Jingbo LiuSchool of Electrical Engineering and Intelligentization, Dongguan University of Technology, Dongguan 523808, China.

Dongshan WeiSchool of Electrical Engineering and Intelligentization, Dongguan University of Technology, Dongguan 523808, China.

Honglei WuCollege of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518061, China.ORCID 0000-0002-8852-3951

Qiye WenState Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China.

Dongxiong LingSchool of Electrical Engineering and Intelligentization, Dongguan University of Technology, Dongguan 523808, China.

Funding

China Postdoctoral Science Foundation 2018M643651National Natural Science Foundation of China 51572042National Natural Science Foundation of China 61771138National Natural Science Foundation of China 61831012National Natural Science Foundation of China 61974094Science Challenge Project TZ2018003Science & Technology Innovation Institute of Dongguan University of Technology KCYCXPT2017004

6 · The paper itself

Abstract

Nanostructures can induce light multireflection, enabling strong light absorption and efficient photocarrier generation. In this work, silicon nanostructures, including nanocylinders, nanotips, and nanoholes, were proposed as all-optical broadband THz modulators. The modulation properties of these modulators were simulated and compared with finite element method calculations. It is interesting to note that the light reflectance values from all nanostructure were greatly suppressed, showing values of 26.22%, 21.04%, and 0.63% for nanocylinder, nanohole, and nanotip structures, respectively, at 2 THz. The calculated results show that under 808 nm illumination light, the best modulation performance is achieved in the nanotip modulator, which displays a modulation depth of 91.63% with a pumping power of 60 mW/mm

Indexed as

CST simulationmodulatornanostructureterahertz

Identifiers

PMID32295005

DOI10.3390/s20082198

PMCPMC7218859

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LicenceCC BY

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.