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Three-photon absorption from six stilbazolium derivatives: application for optical limiting

2002; Elsevier BV; Volume: 353; Issue: 1-2 Linguagem: Inglês

10.1016/s0009-2614(01)01508-1

1873-4448

Chuanlang Zhan, Dehua Li, Deqing Zhang, Yunjing Li, Duoyuan Wang, Tongxian Wang, Zhenzhong Lu, Lizeng Zhao, Yuxin Nie, Daoben Zhu,

Photochemistry and Electron Transfer Studies

Three-photon absorption (3PA) and subsequently induced optical limiting behavior of several stilbazolium derivatives were investigated by using a mode-locked/Q-switched Nd:YAG pulse with a duration of 35 ps and a repetition of 10 Hz at 1064 nm. The measured molecular 3PA cross-sections are in the order 10−78–10−76cm6s2 at the intensity levels of 0–55GW/cm2. It is observed that the 3PA cross-section as well as the optical limiting effect can be enhanced by increasing strength of electron-acceptor units of stilbazolium derivatives.