中文摘要：

采用光偏转测试系统研究了不同温度纯净水中激光空泡脉动过程,通过实验获得了激光空泡在靶表面膨胀和收缩全过程,确定了空泡的最大、最小泡半径、脉动周期和泡壁运动速度。实验采用0℃到70℃的纯净水,测量了空泡的泡半径和脉动周期等特征参量变化情况。实验结果表明,液体温度是影响空泡脉动的一个非常重要的因素,随着液体温度的增加空泡的最大泡半径和溃灭周期均呈增加趋势。给出了相应的理论解释。

英文摘要：

Temperature effects on the behavior of laser-induced bubble in water near the surface of Cu target are investigated experimentally by means of a fiber-coupling optical beam deflection technique （OBD）.The maximum and minimum bubble radii as well as the period and velocity of contracting-expanding of the bubble are determined according to the characteristic signals.The tests of cavitation bubble are performed by using distill water at different temperatures from freezing point（0 ℃） to near boiling.The results indicate that the temperature strongly influences the bubble dynamics.The maximum bubble radius and bubble lifetime increase with the temperature.The mechanism is discussed.