摘要
设计了一种"M"字型的单层六角氮化硼(hBN)超表面实现偏振转换,结构中"M"字型设计为凹槽形状,有效的提高了超表面的透射率和偏振转换比.当TM波入射时,在1.55~1.80×10^(14) Hz频段内获得较高的透射率及偏振转换比.当TE波入射时,在1.40~1.55×10^(14) Hz频段内获得较高的偏振转化比.结果表明透射型偏振转换超表面最高偏振转换比达到0.9,透射率最高为0.75.此外研究了hBN光轴处于任意方向时对透射率及偏振转化比的影响,研究结果为偏振转换器件提供了一种可能.
In this paper, a "M"-shaped single-layer hexagonal boron nitride(hBN) metasurface is designed. The "M"-shaped structure is designed as a groove shape, which effectively improves the transmission of the metasurface. The results show that the highest polarization conversion ratio of the transmissive polarization conversion metasurface reaches 0.9 and the highest is 0.75. When TM wave incidence, higher transmittance and polarization conversion ratio are obtained in the frequency band of 1.55~1.80×10^(14) Hz. When TE wave incidence, a higher polarization conversion ratio is obtained in the frequency band of 1.40~1.55×10^(14) Hz. In addition, the influence of hBN optical axis in any direction on the transmittance and polarization conversion ratio is studied. The research results in this paper provide a possibility for polarization conversion devices.
作者
高凤伟
隋超
刘悦
周胜
Gao Fengwei;Sui Chao;Liu Yue;Zhou Sheng(Harbin Normal University)
出处
《哈尔滨师范大学自然科学学报》
CAS
2020年第6期32-38,共7页
Natural Science Journal of Harbin Normal University
基金
哈尔滨师范大学研究生培养质量提升工程项目
哈尔滨师范大学研究生创新科研项目(HSDSSCX2020-24)。
关键词
超表面
hBN
偏振转换比
透射率
Metasurface
hBN
Polarization conversion
Transmittance