A true single-step process suitable for fabrication of micro-periodic structure in polymer films by two-photon initiated photopolymerization and laser ablation is presented. By the right choice of the irradiation energy, the irradiated zone is modified or ablated in the 1.44-micron-thick film. The mechanism of grating generation and the potential application of the gratings in integrated optics are discussed.
© 2007 Chinese Optics Letters
Yi Dong, Xiaoqiang Yu, Yuming Sun, Yufei Li, Xueyuan Hou, and Xian Zhang, "Femtosecond laser induced index and relief gratings in polymer films," Chin. Opt. Lett. 5, 191-193 (2007)