Electroabsorption in single-crystal film of a second-order optical material

被引:7
|
作者
Swamy, RK [1 ]
Kutty, SP [1 ]
Titus, J [1 ]
Khatavkar, S [1 ]
Thakur, M [1 ]
机构
[1] Auburn Univ, Photon Mat Res Lab, Auburn, AL 36849 USA
基金
美国国家科学基金会;
关键词
D O I
10.1063/1.1811772
中图分类号
O59 [应用物理学];
学科分类号
摘要
In this letter, we report results of electroabsorption and resonant electro-optic measurements in single-crystal film of 4(')-dimethylamino-N-methyl-4-stilbazolium tosylate (DAST). The electroabsorption measurement was made by recording the changes in transmission through the film as an ac field was applied along the dipole axis. The electro-optic measurement was made using the field-induced birefringence method. The measurements were made in the absorptive domain, at 633 and 488 nm. The modulation (DeltaT/T) due to electroabsorption decreased as the angle between the incident polarization and the dipole axis was increased. The observed electroabsorption is due to the imaginary part of the electro-optic coefficient. The real part of the electro-optic coefficient (r(11)) as measured at 633 nm is 770 pm/V. The imaginary parts of the electro-optic coefficients at 633 and 488 nm are 104 and 259 pm/V, respectively. (C) 2004 American Institute of Physics.
引用
收藏
页码:4025 / 4027
页数:3
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