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Two Photon Absorption Effect of Terahertz Radiation from Low-Temperature-Grown GaAs Photoconductive Antennas

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We investigate the possibility of enhancing terahertz radiation power though two-photon absorption induced extra photo-carrier in photoconductive antenna. Meanwhile, competition between single photon absorption and two photon absorption for terahertz radiation are discussed as well.

© 2011 Optical Society of America

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