Nonlinear terahertz superconducting plasmonics

被引：17

作者：

Wu, Jingbo ^{[1
]}

Zhang, Caihong ^{[2
]}

Liang, Lanju ^{[1
]}

Jin, Biaobing ^{[1
]}

Kawayama, Iwao ^{[2
]}

Murakami, Hironaru ^{[2
]}

Kang, Lin ^{[1
]}

Xu, Weiwei ^{[1
]}

Wang, Huabing ^{[1
,3
]}

Chen, Jian ^{[1
]}

Tonouchi, Masayoshi ^{[2
]}

Wu, Peiheng ^{[1
]}

机构：

[1] Nanjing Univ, Res Inst Superconductor Elect RISE, Sch Elect Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China

[2] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

[3] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 16期

关键词：

ENHANCED RAMAN-SCATTERING; HOLE ARRAY; PULSE; TRANSMISSION; GENERATION; FIELD; METAMATERIALS; EXCITATION; LIGHT;

D O I：

10.1063/1.4898818

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Nonlinear terahertz (THz) transmission through subwavelength hole array in superconducting niobium nitride (NbN) film is experimentally investigated using intense THz pulses. The good agreement between the measurement and numerical simulations indicates that the field strength dependent transmission mainly arises from the nonlinear properties of the superconducting film. Under weak THz pulses, the transmission peak can be tuned over a frequency range of 145 GHz which is attributed to the high kinetic inductance of 50 nm-thick NbN film. Utilizing the THz pump-THz probe spectroscopy, we study the dynamic process of transmission spectra and demonstrate that the transition time of such superconducting plasmonic device is within 5 ps. (C) 2014 AIP Publishing LLC.

引用

页数：5

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