Design and Simulation of an Air Cooled Diode Pumped Er:Yb:glass Eye- Safe Laser

In this paper, design and simulation of a side pumped Er:Yb:glass laser is reported. We designed an air cooled system for using Close Coupling method and reduction of the volume and the weight of the system. In this case, symmetrizing and uniformity of pumping is done by using of three laser diodes to pump at a Y shape structure. To optimize system designed, energy and shape of the output laser is studied by change of the main components of the resonator parameters that we could increase the output energy, reduce the pulse width and achieve desired divergence without using of the optical elements. By this condition, we derived a pulse with output energy of 17.8 mJ, pulse width of 13.2 ns and beam with divergence of 4 mrad at repetition rate of 10 Hz in the eye safe band.