Woodpile structure which is a simple three-dimensional photonic crystal was fabricated by a two-photon polymerization. Resins with high two-photon absorption cross-section, transparent at near-IR spectral region but highly absorbing around 400 nm, undergo a two-photon absorption and polymerization upon irradiation with 780nm from a Ti:Sapphire femtosecond laser. The mechanical nano-positioning system was adopted to identify the position of the focal point inside the polymer and to fabricate the high resolution nano woodpile structures. The resultant structures have a face-centered-cubic symmetry.

Date Published: 5 October 2006
PDF: 7 pages
Proc. SPIE 6352, Optoelectronic Materials and Devices, 63520O (5 October 2006); doi: 10.1117/12.691150

Published in SPIE Proceedings Vol. 6352:
Optoelectronic Materials and Devices
Yong Hee Lee; Fumio Koyama; Yi Luo, Editor(s)