Electro-optical characterizations of the large second-order optical nonlinearity of Langmuir-Blodgett films
Gongming WangDepartment of Physics, Fudan University, Shanghai 200433, People's Republic of ChinaJun WenDepartment of Physics, Fudan University, Shanghai 200433, People's Republic of ChinaQi HoungDepartment of Physics, Fudan University, Shanghai 200433, People's Republic of ChinaShixing QianDepartment of Physics, Fudan University, Shanghai 200433, People's Republic of ChinaXingze LuDepartment of Physics, Fudan University, Shanghai 200433, People's Republic of China
1999en
ABI
Abstract
The second-order optical nonlinearity of was deduced from the Pockels response of mixed -arachidic acid Langmuir-Blodgett monolayers by using electro-optically modulated attenuated total reflection spectroscopy. We obtained a considerable second-order susceptibility for of (namely ) which is in agreement with that obtained from the measurement of second-harmonic generation and attributed to the electrical quadrupole and/or magnetic dipole contributions of molecules.
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