激光与光电子学进展, 2012, 49 (12): 123101, 网络出版: 2012-11-06  

十字形金属结构在太赫兹波段的滤波特性

Properties of Terahertz Filter Based on Cross Metal Structures
作者单位
首都师范大学物理系,太赫兹光电子学教育部重点实验室,北京市太赫兹波谱与成像重点实验室, 北京 100048
摘要
实验研究了亚波长十字形金属阵列结构在太赫兹(THz)波段的透射特性。研究表明,在保持十字形金属阵列结构尺度不变的前提下,改变太赫兹波的偏振方向时,其太赫兹透射谱具有无偏窄带滤波特性。大部分太赫兹波可以通过该结构继续传播,仅有很窄带的太赫兹波衰减到极低值,因而产生窄带限波效果。当改变太赫兹波的偏振角度时,透射凹陷所在的频率位置几乎不发生改变,证明该结构在太赫兹波段是一种很好的透射式无偏窄带器件。
Abstract
Cross metal array structure is experimentally studied by terahertz time-domain spectroscopy (THz-TDS). The results show that this kind of structure have the characteristic of non-polarized narrow band filtering. Most terahertz wave can pass through the cross metal array structure. However, the terahertz wave with certain frequencies is restrained by the structure. Moreover, the change of polarization angle does not affect the position of transmission dip. It is proved that the structure is a good non-polarized transmission and filtering device in the terahertz band. These results provide a good reference for the research and fabrication of terahertz sub-wavelength optical components.
参考文献

[1] C. A. Schmuttenmaer. Exploring dynamics in the far-infrared with terahertz spectroscopy [J]. Chem. Rev., 2004, 104(4): 1759~1779

[2] S. Y. Huang, P. C. Ashworth, K. W. C. Kan et al.. Improved sample characterization in terahertz reflection imaging and spectroscopy[J]. Opt. Express, 2009, 17(5): 3848~3854

[3] H. T. Chen, W. J. Padilla, J. M. O. Zide. Active terahertz metamaterial devicesv [J]. Nature, 2006, 444: 597~600

[4] 孟田华, 赵国忠, 张存林. 亚波长分形结构太赫兹透射增强的机理研究[J]. 物理学报, 2008, 57(6): 3846~3852

    Meng Tianhua, Zhang Guozhong, Zhang Cunlin. Study of enhanced transmission of teraherz radiation through subwavelength fractals structure[J]. Acta Physica Sinica, 2008, 57(6): 3846~3852

[5] 苏坚, 陈鹤鸣. 基于液晶光子晶体的太赫兹波调制器[J]. 光学学报, 2010, 30(9): 2710~2713

    Su Jian, Chen Heming. Terahertz wave modulator based on liquid-crystal-filled photonic crystal[J]. Acta Optica Sinica, 2010, 30(9): 2710~2713

[6] 薛超敏, 刘建胜, 郑铮 等. 太赫兹滤波器[J]. 激光与光电子学进展, 2008, 45(1): 43~49

    Xue Chaomin, Liu Jiansheng, Zheng Zheng et al.. Terahertz filters[J]. Laser & Optoelectronics Progress, 2008, 45(1): 43~49

[7] R. Ulrich. Interference filters for the far infrared[J]. Appl. Opt., 1968, 7(10): 1987~1996

[8] O. Paul, R. Beigang, M. Rahm. Highly selective terahertz bandpass filters based on trapped mode excitation[J]. Opt. Express, 2009, 17(21): 18590~18595

[9] F. Eftekhari, R. Gordon, J. Ferreira et al.. Polarization-dependent sensing of a self-assembled monolayer using biaxial nanohole arrays [J]. Appl. Phys. Lett., 2008, 92(25): 253103

[10] I. R. Hooper, J. R. Sambles. Broadband polarization-converting mirror for the visible region of the spectrum[J]. Opt. Lett., 2002, 27(24): 2152~2154

[11] T. D. Drysdale, R. J. Blaikie, H. M. H. Chong et al.. Artificial dielectric devices for variable polarization compensation at millimeter and submillimeter wavelengths[J]. IEEE Trans. Antennas and Propagation, 2003, 51(11): 3072~3079

[12] H. F. Ghaemi, Tineke Thio, D. E. Grupp et al.. Surface plasmons enhance optical transmission through subwavelength holes[J]. Phys. Rev. B, 1998, 58(11): 6779~6782

[13] Xiang Shou, Amit Agrawal, Ajay Nahata. Role of metal film thickness on the enhanced transmission properties of a periodic array of subwavelength apertures[J]. Opt. Express, 2005, 13(24): 9834~9840

[14] Yung-Chiang Lan, Che-Jung Chang, Peng-Hsiao. Resonant tunneling effects on cavity-embeddedmetal film caused by surface-plasmon excitation[J]. Opt. Lett., 2009, 34(1): 25~27

魏波, 赵国忠, 张杲辉, 刘立明. 十字形金属结构在太赫兹波段的滤波特性[J]. 激光与光电子学进展, 2012, 49(12): 123101. Wei Bo, Zhao Guozhong, Zhang Gaohui, Liu Liming. Properties of Terahertz Filter Based on Cross Metal Structures[J]. Laser & Optoelectronics Progress, 2012, 49(12): 123101.

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