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InAs based Nonlinear Dielectric Metasurface for Binary Phase Terahertz Generation

Jung, Hyunseung; Hale, Lucy L.; Gennaro, Sylvain D.; Briscoe, Jayson B.; Padmanabha Iyer, Prasad P.; Doiron, Chloe F.; Harris, Charles T.; Luk, Ting S.; Addamane, Sadhvikas J.; Reno, John L.; Brener, Igal B.; Mitrofanov, Oleg

We demonstrate an InAs-based nonlinear dielectric metasurface, which can generate terahertz (THz) pulses with opposite phase in comparison to an unpatterned InAs layer. It enables binary phase THz metasurfaces for generation and focusing of THz pulses.