Synthesis and functionalization of coumarin-containing copolymers for second order optical nonlinearities
作者： Zacaria Essaïdi , Oksana Krupka , Konstantinos Iliopoulos , Emilie Champigny , Bouchta Sahraoui
DOI: 10.1016/J.OPTMAT.2012.10.011
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摘要: Abstract The second-order nonlinear optical properties of photocross-linkable coumarin-based copolymers were investigated using the second harmonic generation (SHG) with Maker fringes technique. High quality and transparent spin-deposited thin films various methacrylic containing 4-methylcoumarin pendant chromophores prepared coumarin units ordered oriented by corona poling Nonlinear investigations performed a picosecond Q-switched Nd:YAG laser working at fundamental wavelength ( λ = 1064 nm) order susceptibilities functionalized polymers determined. samples irradiated two wavelengths = 254 nm > 300 nm) promoting reversible photo-induced dimerisation moieties within film. latter is shown to have significant impact on response corresponding material. A large SHG obtained.
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