%0 Journal Article
%J Appl. Phys. A
%D 2008
%T Two-photon absorption spectrum of Lucirin TPO-L
%A C. R. Mendonca
%A D. S. Correa
%A T. Baldacchini
%A P. Tayalia
%A Mazur, E.
%X Two-photon absorption induced polymerization provides a powerful method for the fabrication of intricate three-dimensional microstructures. Recently, Lucirin TPO-L was shown to be a photoinitiator with several advantageous properties for two-photon induced polymerization. Here we measure the two-photon absorption cross-section spectrum of Lucirin TPO-L, which presents a maximum of 1.2 GM at 610 nm. Moreover, from the two-photon absorption spectrum we determined that Lucirin TPO-L radical quantum yield is independent of the wavelength. Despite its small two-photon absorption cross- section, it is possible to fabricated excellent microstructures by two-photon polymerization microfabrication due to the high polymerization quantum yield (0.99) of Lucirin TPO-L. These results show that optimization of the two-photon absorption cross-section is not the only factor to be considered when searching for new photoinitiators for microfabrication via two-photon absorption.
%B Appl. Phys. A
%V 90
%P 633–636
%G eng
%U /files/mazur/files/rep_589.pdf
%R 10.1007/s00339-007-4367-0