TY - JOUR
T1 - Optically controllable terahertz modulator based on electromagnetically-induced-transparency-like effect
AU - Bai, Yang
AU - Chen, Kejian
AU - Liu, Hong
AU - Bu, Ting
AU - Cai, Bin
AU - Xu, Jian
AU - Zhu, Yiming
N1 - Funding Information:
This work is partly supported by the Leading Academic Discipline Project of Shanghai Municipal Government ( S30502 ), Shanghai Young College Teacher Develop funding schemes ( slg11006 ), National Natural Science Foundation of China ( 61205095 ), the Key Scientific and Technological Project of Science and Technology Commission of Shanghai Municipality ( 2012YQ140005 , 2011YQ150021 ). The Innovation Fund Project For Graduate Student of Shanghai ( JWCXSL1402 ).
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2015/5/17
Y1 - 2015/5/17
N2 - An optically controllable terahertz wave modulator based on the electromagnetically induced transparency-like effect (EIT-like) of the metamaterial structures is proposed and demonstrated. A modulation depth of 63% was measured at 0.33 THz in our study. The modulation action arises from the destructive interference between the resonators composed of high-resistivity silicon and gold resonators. Utilizing terahertz time domain spectrometer (THz-TDS), we show that the transmission properties of the structures can be tuned by an externally applied pump beam. By comparing the modulation depth with and without the structures producing EIT-like behavior, and the bare silicon's modulation depth, it is found that the modulation performance can be significantly improved with employment of EIT effect. Our study provides an alternative route to facilitate potential applications in terahertz range.
AB - An optically controllable terahertz wave modulator based on the electromagnetically induced transparency-like effect (EIT-like) of the metamaterial structures is proposed and demonstrated. A modulation depth of 63% was measured at 0.33 THz in our study. The modulation action arises from the destructive interference between the resonators composed of high-resistivity silicon and gold resonators. Utilizing terahertz time domain spectrometer (THz-TDS), we show that the transmission properties of the structures can be tuned by an externally applied pump beam. By comparing the modulation depth with and without the structures producing EIT-like behavior, and the bare silicon's modulation depth, it is found that the modulation performance can be significantly improved with employment of EIT effect. Our study provides an alternative route to facilitate potential applications in terahertz range.
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U2 - 10.1016/j.optcom.2015.05.005
DO - 10.1016/j.optcom.2015.05.005
M3 - Article
AN - SCOPUS:84929377907
VL - 353
SP - 83
EP - 89
JO - Optics Communications
JF - Optics Communications
SN - 0030-4018
ER -