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Photo active control of plasmon-induced reflection in complementary terahertz metamaterials

A typical plasmon-induced transmission metamaterial and its corresponding complementary structure is designed and explored. The results show that the transmission spectra of the two structures are complementary, but the reflection spectra of the complementary structure and the transmission spectra of the ordinary structure are in good agreement. Furthermore, this work integrate photosensitive silicon into the complementary metal-based metamaterials, realizing the optical active control of the plasmon-induced reflection and transmission. This research strategy provides a new way for the study of reflective structures. Moreover, the active control of the reflection and transmission play a role in slow light devices and terahertz filter.