A novel audio beam loudspeaker which based on nonlinear propagation effects of ultrasonic in the air to generate audible sound with high directivity is presented.
提出了一种利用空气中超声波非线性传播效应制作的、可产生高指向性可听声的新型声束扬声器。
We introduce a model of random birefringent single mode fibers, and the general nonlinear propagation equations of dual-lightwaves in random birefringent fibers are deduced.
我们引入了随机扰动双折射单模光纤模型，导出了双波长的光波在随机双折射光纤中的非线性脉冲传输方程；
The information entropy in quantum mechanics is introduced to represent nonlinear propagation of light within the framework of the Schroedinger formulation of light propagation.
结合光束传输的薛定谔形式理论，基于量子机制的信息熵被用来描述非线性光传输。
By solving the equation numerically, the nonlinear propagation of femtosecond laser pulse with duration of several optical oscillation periods in single-model optical fiber has been simulated.
对方程作了数值解，模拟了具有几个光振荡周期的飞秒脉冲在单模光纤中的非线性传输。
By solving the equation numerically, the nonlinear propagation of femtosecond laser pulse with duration of several optical oscillation periods in single-model optical fiber has been simulated.
对方程作了数值解，模拟了具有几个光振荡周期的飞秒脉冲在单模光纤中的非线性传输。
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