The Q-switched Nd : YAG and Yb : YAG microchip lasers optimization and comparative analysis

摘要

The microchip lasers based on the neodymium or the ytterbium doped yttrium-aluminium garnet crystal and Q-sw itched by the Cr4+ : YAG film are considered. The optimal (maximizing of energy) values of the pumping beam radius, the absorber parameters (the thickness and tetravalent chromium ion concentration), and the output mirror reflectivity are determined. The possibility of higher values of energy in the Yb : YAG laser pulse, in comparison with a more traditional Nd : YAG laser, is also substantiated. [References: 7]