驻波情形的液体声光效应的理论与实验研究  

Study of standing wave induced acousto-optic effect in liquid

作　　者：刘欣[1] 柴金华 章显[1] 

机构地区：[1]陆军军官学院基础部,安徽合肥230031

出　　处：《物理实验》2013年第7期35-39,共5页Physics Experimentation

摘　　要：模拟计算了液体声光衍射的贝塞尔函数,测量了不同质量分数NaCl溶液对激光的衍射效率和不同温度纯水对激光衍射的相对光强比,计算了不同质量分数NaCl溶液的声光相位延迟、声致折射率变化量幅值.结果表明:随着NaCl溶液质量分数的增加,声光衍射效率、相对光强比、声致折射率变化量幅值均不同程度下降,而温度对纯水的相对光强比影响很小.The Bessel function of liquid acousto-optic diffraction was numerically calculated in the standing wave case.The laser diffraction efficiency in different concentrations of NaCl solution and the relative light intensity of the laser diffracted by different temperatures of pure water were measured.The acousto-optic phase delay and acoustic refractive index increment of different concentrations of NaCl solution were calculated.The results showed that acousto-optic diffraction efficiency,the relative light intensity ratio and the acoustic refractive index increment decreased to a certain extent with the increase of NaCl concentration.The relative light intensity ratio of pure water was less affected by temperature.

关 键 词：声光效应 超声光栅 超声驻波 衍射效率 

分 类 号：O426.3[理学—声学]