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Electrically Controlled Second-Order Nonlinear Generation of Terahertz Waves

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Abstract

We report electric-field-induced second-harmonic generation of terahertz waves in photodoped gallium arsenide with direct-current bias fields. A fundamental wave of 0.6 THz was selectively incident and its second-harmonic wave of 1.2 THz was clearly observed.

© 2017 Optical Society of America

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