Abstract

Nano-metal ink [1] serves as a powerful tool to make terahertz metamaterials [2] by using a superfine inkjet printing system [3]. On the other hand, since it consists of metal nanoparticles, the ink itself has structures with a nanometer scale. It has recently reported that, when such metal nanostructures are irradiated by femtosecond laser pulses, the surface plasmon is excited and the resulting local field enhancement produces terahertz emission [4–6]. In this work, we study the emission of terahertz pulses from the surface coated by the nano-metal ink.

© 2015 Japan Society of Applied Physics, Optical Society of America