物理实验
物理實驗
물리실험
PHYSICS EXPERIMENTATION
2013年
7期
35-39
,共5页
刘欣%柴金华%章显
劉訢%柴金華%章顯
류흔%시금화%장현
声光效应%超声光栅%超声驻波%衍射效率
聲光效應%超聲光柵%超聲駐波%衍射效率
성광효응%초성광책%초성주파%연사효솔
acousto-optic effect%ultrasonic grating%ultrasonic standing wave%diffraction efficien-cy
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N aC l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N aC l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N aC l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。
模擬計算瞭液體聲光衍射的貝塞爾函數,測量瞭不同質量分數N aC l溶液對激光的衍射效率和不同溫度純水對激光衍射的相對光彊比,計算瞭不同質量分數N aC l溶液的聲光相位延遲、聲緻摺射率變化量幅值。結果錶明:隨著N aC l溶液質量分數的增加,聲光衍射效率、相對光彊比、聲緻摺射率變化量幅值均不同程度下降,而溫度對純水的相對光彊比影響很小。
모의계산료액체성광연사적패새이함수,측량료불동질량분수N aC l용액대격광적연사효솔화불동온도순수대격광연사적상대광강비,계산료불동질량분수N aC l용액적성광상위연지、성치절사솔변화량폭치。결과표명:수착N aC l용액질량분수적증가,성광연사효솔、상대광강비、성치절사솔변화량폭치균불동정도하강,이온도대순수적상대광강비영향흔소。
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 rela-tive 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 .