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  • 2015 Conference on Lasers and Electro-Optics Pacific Rim
  • (Optica Publishing Group, 2015),
  • paper 27P_1

Terahertz Wave Modulators in Organic/Si Bilayers

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We realized optically controllable active terahertz (THz) modulators with extremely high modulation efficiencies, using organic/silicon hybrid structures. The rapid photo-induced electron transfer in thermally annealed C60/silicon bilayers enables the realization of modulation efficiency up to 98%. Furthermore, we demonstrate the broadband modulation of THz waves due to the change cutoff condition caused by the formation of efficient charge separation by the photo-excitation in the structures. The realization of near-perfect modulation efficiency of THz waves opens up the possibilities of utilizing active modulators for THz spectroscopy and communications.

© 2015 IEEE

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