电光调制中相位、强度和对比度的综合效应。铁电材料的应用
Combined effects due to phase, intensity and contrast in electrooptic modulation. Application to ferroelectric materials
摘要：
本文从理论和实验上研究了电光调制过程中相位、强度和对比度效应的组合。这种组合的一个结果是单频信号的幅度的修改，单频信号通常用作电光调制器和电光系数的测量的工作点。直接强度调制的另一个结果是将传递函数的双频点从它们通常在强度极值处占据的位置移位。如果直接强度调制比相位调制强，它们甚至可以使它们消失。这种现象是任何铁电材料所预期的，其中大部分入射光被畴壁或晶界偏转或散射。它们在电光系数的测定中会导致相当大的误差。解释了提取不同贡献的适当程序。给出了在硒酸氢铷中的实验结果，并讨论了电光调制器工作的后果。
英文摘要：
The combination of phase, intensity, and contrast effects during electrooptic modulation is theoretically and exper- imentally investigated. One consequence of this combination is the modification of the amplitude of the single-frequency signals which are commonly used as working points for electrooptic mod- ulators and for the measurements of the electrooptic coefficients. Another consequence of direct intensity modulation is to shift the double-frequency points of the transfer function from the positions they normally occupy at the intensity extrema. They can even make them disappear if the direct intensity modulation is stronger than the phase modulation. Such phenomena are expected with any ferroelectric material in which a significant part of the incident light is deflected or scattered by domain walls or grain boundaries. They can lead to considerable mistakes in the determination of the electrooptic coefficients. Appropriate procedures to extract the different contributions are explained. Experimental results in rubidium hydrogen selenate are given, and consequences of the working of electrooptic modulators are discussed.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
