THERMOSETTING NONLINEAR OPTICAL POLYMER - POLYURETHANE WITH DISPERSE RED 19 SIDE GROUPS

被引:68
作者
SHI, YQ [1 ]
STEIER, WH [1 ]
CHEN, M [1 ]
YU, LP [1 ]
DALTON, LR [1 ]
机构
[1] UNIV SO CALIF,DEPT CHEM,LOS ANGELES,CA 90089
关键词
D O I
10.1063/1.106914
中图分类号
O59 [应用物理学];
学科分类号
摘要
A new thermosetting second-order nonlinear optical polyurethane polymer with disperse red 19 pendant groups was studied by second-harmonic generation and electro-optic modulation methods. The polymer can be crosslinked by thermal curing during electric field poling. The electro-optic coefficient r13 measured with a Mach-Zehnder interferometer ranged from 5 pm/V at 800 nm to 13 pm/V at 633 nm. The polymer crosslinked during poling showed no significant decay of the nonlinearity at room temperature for thousands of hours. A long-term thermal stability of the dipole alignment at an elevated temperature, 90-degrees-C, was demonstrated. The thermosetting polymer showed improved alignment stability under ultraviolet exposure.
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页码:2577 / 2579
页数:3
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