Two-photon absorption photoinitiated polymerization

A novel two-photon photoninitiated polymerization is reported. The results of the study show that the two-photon polymerization of TMPTMA can be initiated by means of 4,4'-bis(di-n-butylamino)-E-stiebene(BDBAS) under 600 nm strong laser, The light source that we used for the two-photon polymerization is a YAG pumped dye laser whose oscillating wavelength repetition rate and single pulse energy are 600 nm, 10 ns and 15 mJ, respectively. The peak power density of radiation light tight-focused by means of bojective lens is 3.8 GW/cm(2), The relative mechanism of the polymerization is discussed.