We demonstrate a non-thermal metallization of VO<sub>2</sub> induced by a non-resonant excitation at frequencies around 25 THz. An ultrafast switching time of 80 fs comprises only two cycles of the driving multi-THz field.
© 2014 OSA
A. Grupp, B. Mayer, C. Schmidt, J. Oelmann, R. E. Marvel, R. F. Haglund, A. Leitenstorfer, and A. Pashkin, "Ultrafast Insulator-Metal Transition in VO<sub>2</sub> Driven by Intense Multi-THz Pulses," in 19th International Conference on Ultrafast Phenomena, OSA Technical Digest (online) (Optical Society of America, 2014), paper 10.Thu.A.5.
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