Numerical model for high energy laser indoor transmission

The model for simulating the laser beam propagation through the beam path indoor was described. Because no heat removal occurs by forced convection in the beam path, thermal conduction and natural convection dominate. The results show that the thermal effect produced by the high energy laser in the beam path can distort the beam and affect the beam quality. Because of the thermal effect in the beam path, with 10kW laser power, the radius of encircled energy is 3.1 times that of no the thermal effect, and the Strehl ratio falls 60%.