The evaporation of water and ethanol droplets is investigated experimentally. The evaporation rate of the
hanging droplets on a thermocouple with and without laser excitation is demonstrated in the study. In
the absence of laser excitation, the ethanol droplets are subjected to have a fast evaporation than the
water droplets under the open environmental conditions. As the droplets are then exposed to the pulsed
laser excitation at different power rating under the frequency of 1 Hz, 3 Hz or 5 Hz. The present of laser
excitation leads to a significant temperature increase in the droplets. The evaporation rates are higher
than those without laser excitation. It is observed that as the laser frequency and intensity increases, the
rate of evaporation and temperature increases generally. The explosive vaporization happens at a higher
power at a higher laser frequency for both water and ethanol droplets. However, this phenomenon is
much more significant for water as compared to ethanol. The evaporation rate tendency is opposite to
the experiments carried out without laser excitation.