光学学报, 2020, 40 (14): 1424001, 网络出版: 2020-07-23
工字形椭圆纳米结构的吸收及其折射率敏感特性研究 下载: 1082次
Absorption and Refractive Index Sensitivity of the I-Shaped Elliptical Nanostructures
图 & 表
图 1. 吸收器结构示意图。(a)椭圆盘完美吸收器三维示意图;(b)结构单元俯视图
Fig. 1. Schematic diagram of absorber structure. (a) Three-dimensional illustration of an oval disc perfect absorber; (b) top view of unit cell
图 2. 有金基底(实线)和无金基底(虚线)时的吸收光谱
Fig. 2. Absorption spectra with gold substrate (solid line) and without gold substrate (dotted line)
图 3. 不同波长处的电场分布。(a)~(d)对应波长Ⅰ、Ⅱ、Ⅲ和Ⅳ处在yz平面电场分布;(e)~(h)对应波长Ⅰ、Ⅱ、Ⅲ和Ⅳ处在xy平面电场分布
Fig. 3. Electric field distributions at different wavelengths. (a)--(d) Electric field distributions in the yz plane corresponding to the wavelengths I, II, III, and IV, respectively; (e)--(h) electric field distributions in the xy plane corresponding to the wavelengths I, II, III, and IV, respectively
图 4. 不同结构参数对吸收光谱的影响。(a)不同间距d;(b)不同柱高h;(c)不同短轴w1;(d)不同长轴l1;(e)不同短轴w2;(f)不同长轴l2
Fig. 4. Effects of different structural parameters on absorption spectra. (a) Different distances d; (b) different column heights h; (c) different short axes w1; (d) different major axes l1; (e) different minor axes w2; (f) different major axes l2
图 5. 不同角度和不同结构对吸收光谱的影响。(a)不同角度;(b)不同结构
Fig. 5. Effects of different angles and structures on absorption spectra. (a) Different angles; (b) different structures
图 6. 外界环境折射率对吸收光谱的影响。 (a)不同外界环境折射率n下椭圆盘的吸收光谱;(b)外界环境折射率n的变化与吸收光谱波峰位置的变化情况的关系图
Fig. 6. Effect of external environment refractive index n on absorption spectra. (a) Different external environment refractive index n; (b) relationship between the change of the external environment refractive index n and the change of the peak position of the absorption spectra
旷依琴, 李刚, 闫竹青, 张彦军, 张志东, 郝现伟. 工字形椭圆纳米结构的吸收及其折射率敏感特性研究[J]. 光学学报, 2020, 40(14): 1424001. Yiqin Kuang, Gang Li, Zhuqing Yan, Yanjun Zhang, Zhidong Zhang, Xianwei Hao. Absorption and Refractive Index Sensitivity of the I-Shaped Elliptical Nanostructures[J]. Acta Optica Sinica, 2020, 40(14): 1424001.