【摘要】 本文导出了TEM₀₀脉冲激光引起的液体中温度场的分布和光声脉冲压力的表达式.讨论了激光脉冲持续时间,激光束宽度对压力信号的影响.采用高斯光束光斑偏折技术所得实验结果与理论很好地符合.为流体热力学参量非接触实时检测提供了一种新颖的光学方法.更多还原

【Abstract】 In this paper, we give the distribution of temperature field and pulse photoacotistic pressure in liquid generated by pulsed laser. The effect of pulse duration and laser beam dimension on the pressure signal is discussed. The experimental results obtained by the Gauss laser beam deflection technique well conform with the theory. This technique provides a novel optical method for the conta-ctless and rapid measurement of thermodynamic parameters.更多还原