Polaritonic materials fabricated and tested with ultrashort-pulse lasers

摘要

Using femtosecond laser machining, we have fabricated photonic bandgapmaterials that influence propagation of phonon-polaritons in ferroelectriccrystals. Broadband polaritons were generated with impulsive stimulated Ramanscattering (ISRS) using an ultrashort laser pulse, and the spatial and temporalevolution of the polaritons were imaged as they propagated through thefabricated structures with polariton real-space imaging. These techniques offera new approach to optical materials design.