The research of resonant frequency and modulation depth of Metamaterial THz modulator

Lei Jiao; Li-juan Li; Hai-lin Cui; Jing-suo He

doi:10.1117/12.2034947

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27 August 2013 The research of resonant frequency and modulation depth of Metamaterial THz modulator

Lei Jiao, Li-juan Li, Hai-lin Cui, Jing-suo He

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Proceedings Volume 8909, International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications; 89091B (2013) https://doi.org/10.1117/12.2034947
Event: ISPDI 2013 - Fifth International Symposium on Photoelectronic Detection and Imaging, 2013, Beijing, China

Abstract

The fundamental parameters of THz modulators based on the SRR structure metamaterial have been researched and found that the SRR size and opening width have a significant effect on the resonant frequency, meanwhile the thickness and width of this structure are very weak influence on the resonant frequency. The resonant frequency and response time have been calculated theoretically. The resonant frequency fits the simulation results well, and response time is mainly determined by the carrier lifetime which is in nanosecond order. We also proposed a program of experimental measurements of the SRR modulation speed. Finally we simulated a special SRR structure with metal strips on the back of wafer to increase modulation depth significantly.

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Lei Jiao, Li-juan Li, Hai-lin Cui, and Jing-suo He "The research of resonant frequency and modulation depth of Metamaterial THz modulator", Proc. SPIE 8909, International Symposium on Photoelectronic Detection and Imaging 2013: Terahertz Technologies and Applications, 89091B (27 August 2013); https://doi.org/10.1117/12.2034947

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