1. The problem statement, all variables and given/known data wavelength 1.08um pulse duration 20ns pulsed energy 700mJ pulse rate 15Hz => Total number of pulses ~1800 per run Came across in a paper published. Was thinking a way to calculate the numbers of pulses ? 2. Relevant equations laser beam comes in pulses with pulse duration as the bullet length while pulse rate as the firing rate of the gun. While pulsed energy tells amount of gun powder per bullet. 3. The attempt at a solution tried google until i read about the above explanation from this forum. Any book to recommend ?