Nano woodpile structure via two photon absorption polymerization

Abstract

Woodpile structures for three dimensional photonic crystal were fabricated via two photon polymerization. Resins with high two-photon crosssection undergoes a polymerization and forms the woodpile structure upon irradiation of a 780nm Ti:Sapphire femtosecond laser. The bandgap of woodpile depends on the parameters of woodpile, which can be varied by nano-positioning system.