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Scholarly Works (1 results)

Article
Peer Reviewed

Ultrafast Terahertz Gating of the Polarization and Giant Nonlinear Optical Response in BiFeO3 Thin Films

Chen, Frank;
Goodfellow, John;
Liu, Shi;
Grinberg, Ilya;
Hoffmann, Matthias C;
Damodaran, Anoop R;
Zhu, Yi;
Zalden, Peter;
Zhang, Xiaohang;
Takeuchi, Ichiro;
Rappe, Andrew M;
Martin, Lane W;
Wen, Haidan;
Lindenberg, Aaron M

UC Berkeley Previously Published Works (2015)

Terahertz pulses are applied as an all-optical bias to ferroelectric thin-film BiFeO3 while monitoring the time-dependent ferroelectric polarization through its nonlinear optical response. Modulations in the intensity of the second harmonic light generated by the film correspond to on-off ratios of 220× gateable on femtosecond timescales. Polarization modulations comparable to the built-in static polarization are observed.

Cover page: Ultrafast Terahertz Gating of the Polarization and Giant Nonlinear Optical Response in BiFeO3 Thin Films