分析也表明，利用聚焦的几何排布测量材料的非线性系数，具有比常规Z扫描方法更高的灵敏度。

Meanwhile, the analysis also shows that the sensitivity of Z scan technique with the focused optical system is higher than that of common Z scan technique.

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前言：目的：研究声衰减系数、声速、温度等媒质参数对声聚焦的影响。

Objective: Study the influence of parameters such as attenuation coefficient, velocity of sound, and temperature of medium on focusing sound field.

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分析也表明，聚焦几何排布可用于非线性折射系数的测量，并具有比常规Z扫描方法更高的灵敏度。

It is also shown that focused geometry arrangements can be employed for measurements of nonlinear refractive index with a higher sensitivity than that of common Z scan techniques.

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