红外与毫米波学报, 2020, 39 (5): 576, 网络出版: 2020-12-29
在800~1100nm范围内实现基于狄拉克半金属的多波段超材料波导
图 & 表
图 1. (a)金属-绝缘体-金属结构单元的结构示意图,黄色部分是狄拉克半金属,绿色部分是SU-8层,蓝色部分是SiO2层(b)结构单元的顶层(c)结构单元的中间层(d)结构单元的底层,SU-8层和SiO2层的厚度都设置为180nm
Fig. 1. (a) Schematic diagram of the proposed metal–insulator–metal waveguide. The yellow parts are Dirac semimetal layers. The green part is SU-8 layer. The blue part is SiO2. (b) The top layer of the proposed unit cell. (c) The middle layer of the proposed unit cell. (d) The bottom layer of the proposed unit cell. The thickness of SU-8 layer and SiO2 layer is set as 180nm
图 2. (a)该研究的结构单元示意图(b)该研究的结构单元的仿真透射谱和理论计算透射谱(c)没有中间反射条的结构单元示意图(d)没有中间反射条的结构单元的仿真透射谱
Fig. 2. (a) The schematic diagram of the proposed structure. (b) Simulated and calculated transmission spectrum of the proposed structure. (c) Schematic diagram of the waveguide without metal reflector layer. (d) Simulated and calculated transmission spectrum of the waveguide without metal reflector layer
图 3. (a) 磁场共振强度在波长842nm的分布结果 (b) 磁场共振强度在波长921nm的分布结果 (c) 磁场共振强度在波长900nm的分布结果 (d) 磁场共振强度在波长950nm的分布结果
Fig. 3. (a) The magnetic field intensity distribution at resonance wavelength 842nm. (b) The magnetic field intensity distribution at resonance wavelength 921nm. (c) The magnetic field intensity distribution at resonance wavelength 900nm. (d) The magnetic field intensity distribution at resonance wavelength 950nm
图 4. (a) 磁场共振强度在波长1010nm的分布结果 (b) 磁场共振强度在波长1061nm的分布结果 (c) 磁场共振强度在波长1040nm的分布结果 (d) 磁场共振强度在波长1080nm的分布结果
Fig. 4. (a) The magnetic field intensity distribution at resonance wavelength 1010nm. (b) The magnetic field intensity distribution at resonance wavelength 1061nm. (c) The magnetic field intensity distribution at resonance wavelength 1040nm. (d) The magnetic field intensity distribution at resonance wavelength 1080nm
图 6. (a) 没有中间反射条的结构单元的磁场共振强度在波长840nm的分布结果 (b) 没有中间反射条的结构单元的磁场共振强度在波长940nm的分布结果 (c) 没有中间反射条的结构单元的磁场共振强度在波长885nm的分布结果 (d) 没有中间反射条的结构单元的磁场共振强度在波长973nm的分布结果
Fig. 6. (a) The magnetic field intensity distribution of the waveguide without metal reflector layer at resonance wavelength 840nm. (b) The magnetic field intensity distribution of the waveguide without metal reflector layer at resonance wavelength 940nm. (c) The magnetic field intensity distribution of the waveguide without metal reflector layer at resonance wavelength 885nm. (d) The magnetic field intensity distribution of the waveguide without metal reflector layer at resonance wavelength 973nm
钟敏, 史先春. 在800~1100nm范围内实现基于狄拉克半金属的多波段超材料波导[J]. 红外与毫米波学报, 2020, 39(5): 576. Min ZHONG, Xian-Chun SHI.