Li Chenyu, Yang Zhou, Zhou Qingli, Wu A'ni, Zhang Cunlin. Influence of structures on optical modulation in terahertz metamaterials[J]. Infrared and Laser Engineering, 2016, 45(7): 703002-0703002(5). doi: 10.3788/IRLA201645.0703002
| Citation:
|
Li Chenyu, Yang Zhou, Zhou Qingli, Wu A'ni, Zhang Cunlin. Influence of structures on optical modulation in terahertz metamaterials[J]. Infrared and Laser Engineering, 2016, 45(7): 703002-0703002(5). doi: 10.3788/IRLA201645.0703002
|
Influence of structures on optical modulation in terahertz metamaterials
- 1.
Beijing Key Laboratory for Terahertz Spectroscopy and Imaging,Key Laboratory for Terahertz Optoelectronics,Ministry of Education,Department of Physics,Capital Normal University,Beijing 100048,China
- Received Date: 2015-11-05
- Rev Recd Date:
2015-12-20
- Publish Date:
2016-07-25
-
Abstract
By utilizing optical pump terahertz probe spectroscopy, the optical modulated properties of three samples were investigated with terahertz subwavelength structures, which were derived from classical split ring resonators. The obtained results show in the metamaterials design, it is needed to avoid the same length bar in the middle of the symmetric samples due to the fact that the middle bar has less influence on the resonant property when the terahertz electric field vector is parallel to the bottom bar. However, the asymmetric samples exist coupling and splitting phenomenon in transmission spectra. For the different resonance mechanisms, it is found the LC resonance has higher sensitivity than the dipole resonance to the pump excitation. Although different designed structures will exhibit different resonant positions in frequency, the optical modulation behaviors of those samples have one same characterization. That is, when the terahertz electric field vector is parallel to the bilateral bar, there is only one transmission dip because of the structure design and this transmission dip from the dipole resonance is not sensitive to the pump excitation.
-
References
|
[1]
|
Zhang Jianfa, Yuan Xiaodong, Qin Shiqiao. Tunable terahertz and optical metamaterials[J]. Chinese Optics, 2014, 7(3):349-359. (in Chinese)张检发, 袁晓东, 秦石乔. 可调太赫兹与光学超材料[J]. 中国光学, 2014, 7(3):349-359. |
|
[2]
|
Yang Jing, Zhao Jiayu, Guo Lanjun, et al. Study of terahertz radiation from filamentation induced by ultrafast laser pulses[J]. Infrared and Laser Engineering, 2015, 44(3):996-1007. (in Chinese)杨晶, 赵佳宇, 郭兰军, 等. 超快激光成丝产生太赫兹波的研究[J]. 红外与激光工程, 2015, 44(3):996-1007. |
|
[3]
|
Padilla W J, Taylor A J, Highstrete C, et al. Dynamical electric and magnetic metamaterial response at terahertz frequencies[J]. Phys Rev Lett, 2006, 96:107401. |
|
[4]
|
Wu A'ni, Li Chengyu, Zhou Qingli, et al. Influence of temperature on resonant properties in terahertz subwavelength metal structures[J]. Infrared and Laser Engineering, 2015, 44(6):1832-1835. (in Chinese)武阿妮, 李晨毓, 周庆莉, 等. 温度对太赫兹亚波长金属结构共振特性的影响[J]. 红外与激光工程, 2015, 44(6):1832-1835. |
|
[5]
|
Singh R, Cao W, Al-Naib I, et al. Ultrasensitive terahertz sensing with high-Q Fano resonances in metasurfaces[J]. Applied Physics Letters, 2014, 105(17):171101. |
|
[6]
|
Yang Y, Huang R, Cong L, et al. Modulating the fundamental inductive-capacitive resonance in asymmetric double-split ring terahertz metamaterials[J]. Applied Physics Letters, 2011, 98(12):121114. |
|
[7]
|
Padilla W J, Highstrete C, Taylor A J. Dynamical electric and magnetic metamaterial response at terahertz frequencies[C]//Lasers and Electro-Optics, 2006 and 2006 Quantum Electronics and Laser Science Conference. CLEO/QELS 2006. Conference on. IEEE, 2006:1-2. |
|
[8]
|
Chen H T, Padilla W J, Cich M J, et al. A metamaterial solid-state terahertz phase modulator[J]. Nature Photonics, 2008, 3(3):148-151. |
|
[9]
|
Zhou Q L, Shi Y L, Wang A H, et al. Ultrafast optical modulation of terahertz metamaterials[J]. J Opt, 2011, 13(12):125102. |
|
[10]
|
Liu J F, Zhou Q L, Shi Y L, et al. Study of L-shaped resonators at terahertz frequencies[J]. Applied Physics Letters, 2013, 103:241911. |
-
-
Proportional views
-
DownLoad: