Photoacoustic deflection technique of pulsed laser in liquid

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.