重庆理工大学学报（自然科学版）2016，Vol.30Issue(4)：40-45,6.DOI:10.3969/j.issn.1674-8425(z).2016.04.008
一种高反射率窄带太赫兹反射滤光片的设计方法
Design of Terahertz Reflection Filter with High Reflectivity and Narrow Bandwidth
摘要
Abstract
We reported on one-dimensional photonic crystal slabs designed to serve as narrowband reflection filters at terahertz frequencies. The reflection spectra of photonic crystal slabs exhibited sharp resonant features with Fano line shapes due to coupling of the leaxy photonic crystal modes to the continuum of free-space modes. Actually,one-dimensional photonic crystal slabs,which is terahrtz photonic crystal slabs,can be used as volumetric quasi-optical elements for a broad frequency range. Compared with optical photonic crystal slabs,the terahertz photonic crystal slabs are easy to fabricate due to longer worxing wavelength. In this paper,we gave the method to position the central frequency at choice in light of the dispersion curves of leaxy modes and diffracted waves. Bandwidth as narrow as several gigahertz at half-maximum was illustrated. Symmetric response and sideband suppression were achieved using the thin film effect. At last,we designed an angle-tunable,oblique incidence resonant filter. In the region of interest,the shift of the peax frequency is linear with respect to changes in the angle of incidence.关键词
太赫兹/滤光片/光子晶体/共振Key words
terahertz/optical filter/photonic crystal slab/resonance分类
物理学引用本文复制引用
任霄钰,孙天玉,苑进社..一种高反射率窄带太赫兹反射滤光片的设计方法[J].重庆理工大学学报（自然科学版）,2016,30(4):40-45,6.基金项目
国家自然科学基金资助项目 （）
