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- Title
Third-order nonlinear optical properties of an azobenzene-containing ionic liquid crystalline polymer.
- Authors
Zhao, Fuli; Pan, Zhihua; Wang, Changshun; Zhou, Yan; Qin, Mu
- Abstract
The nonlinear optical properties of an azobenzene-containing ionic liquid crystalline polymer were investigated by a single beam Z-scan technique employing 38 ps and 6 ns laser pulses at 532 nm. The polymer film exhibited large nonlinear refraction and negligible nonlinear absorption under both ps and ns pulses excitation. The nonlinear refractive indices of the polymer were in the order of $$10^{-11} \hbox {cm}^{2}/\hbox {W}$$ under ps excitation and $$10^{-8}\hbox {cm}^{2}/\hbox {W}$$ under ns excitation, respectively. The mechanism accounting for the process of nonlinear refraction was discussed in terms of photoinduced trans-cis transformation and thermal effect.
- Subjects
AZOBENZENE; NONLINEAR optical materials; IONIC liquids; CRYSTALLINE polymers; SINGLE crystals; LASER pulses
- Publication
Optical & Quantum Electronics, 2014, Vol 46, Issue 11, p1491
- ISSN
0306-8919
- Publication type
Article
- DOI
10.1007/s11082-013-9863-1