High power collimated diode laser stack

A high power collimated diode laser stack is carried out based on fast-axis collimation and stack packaging techniques. The module includes ten typical continuous wave (cw) bars and the total output power can be up to 368W at 48. 6A. Using a cylindrical lens as the collimation elements, we can make the fast-axis divergence and the slow-axis divergence are 0.926 4° and 8.206° respectively. The light emitting area is limited in a square area of 18.3 mm×11 mm. The module has the advantage of high power density and offers a wide potential applications in pumping and material processing.