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Terahertz wave refractive index sensor based on a sunflower-type photonic crystal
Laser Physics ( IF 1.2 ) Pub Date : 2020-05-26 , DOI: 10.1088/1555-6611/ab8af2
Dexian Yan 1, 2 , Miao Meng 1, 2 , Jiusheng Li 1, 2 , Yi Wang 2
Affiliation  

Refractive index sensing is attracting extensive interest in sensing fields using terahertz technology. For improving the performance of terahertz sensors, a sensing scheme based on high-density polyethylene sunflower-type circular photonic crystal structure is proposed. The designed sensor in this paper contains two symmetrical sample cells surrounding a cavity in a circular photonic crystal. The sensor characteristics depending on the structure parameters are numerically investigated. Finally, a sensitivity of 7828 nm RIU −1 , Q-factor of 185.91 and figure of merit of 1.89 are realized. This work is expected to lay the foundation of realization of high-performance terahertz wave sensors and may find potential applications in biological and chemical sensing.

中文翻译:

基于向日葵型光子晶体的太赫兹波折射率传感器

折射率感测在使用太赫兹技术的感测领域引起了广泛的兴趣。为了提高太赫兹传感器的性能,提出了一种基于高密度聚乙烯向日葵型圆形光子晶体结构的传感方案。本文设计的传感器包含两个对称的样品池,这些样品池围绕圆形光子晶体的腔。对取决于结构参数的传感器特性进行了数值研究。最终,实现了7828 nm RIU -1的灵敏度,185.91的Q因子和1.89的品质因数。这项工作有望为高性能太赫兹波传感器的实现奠定基础,并有望在生物和化学传感领域找到潜在的应用。
更新日期:2020-05-26
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