Low-frequency active surface plasmon optics on semiconductors

J. Gómez Rivas; M. Kuttge; H. Kurz; P. Haring Bolivar; J.A. Sánchez-Gil

doi:10.1063/1.2177348

Low-frequency active surface plasmon optics on semiconductors

J. Gómez Rivas, M. Kuttge, H. Kurz, P. Haring Bolivar, J.A. Sánchez-Gil

Photonics and Semiconductor Nanophysics

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Abstract

A major challenge in the development of surface plasmon optics or plasmonics is the active control of the propagation of surface plasmon polaritons (SPPs). Here, we demonstrate the feasibility of low-frequency active plasmonics using semiconductors. We show experimentally that the Bragg scattering of terahertz SPPs on a semiconductor grating can be modified by thermal excitation of free carriers. The transmission of SPPs through the grating at certain frequencies can be switched completely by changing the temperature less than 100 °C. This semiconductor switch provides a basis for the development of low-frequency surface-plasmon optical devices.

Original language	English
Article number	082106
Pages (from-to)	082106-1/3
Journal	Applied Physics Letters
Volume	88
Issue number	8
DOIs	https://doi.org/10.1063/1.2177348
Publication status	Published - 2006

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AB - A major challenge in the development of surface plasmon optics or plasmonics is the active control of the propagation of surface plasmon polaritons (SPPs). Here, we demonstrate the feasibility of low-frequency active plasmonics using semiconductors. We show experimentally that the Bragg scattering of terahertz SPPs on a semiconductor grating can be modified by thermal excitation of free carriers. The transmission of SPPs through the grating at certain frequencies can be switched completely by changing the temperature less than 100 °C. This semiconductor switch provides a basis for the development of low-frequency surface-plasmon optical devices.

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Low-frequency active surface plasmon optics on semiconductors

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