Abstract-Photoinduced Nonlinear Mixing of Terahertz Dipole Resonances in Graphene Metadevices

http://onlinelibrary.wiley.com/doi/10.1002/adma.201504444/abstract

The first experimental demonstration of nonlinear terahertz difference-frequency generation in a hybrid graphene metadevice is reported. Decades of research have revealed that terahertz-wave generation is impossible in single-layer graphene. This limitation is overcome and nonlinear terahertz generation by ultra-short optical pulse injection is demonstrated. This device is an essential step toward atomically-thin, nonlinear terahertz optoelectronic components.