Output characteristic of diode-side-pumped high power YAG laser

The shift coefficients of the central wavelength of diode laser under different cooling water temperature and operating current were measured. The gain distrubution in the Nd:YAG rod was theoretically studied using ray tracing program. Without the help of collimating lens, two kinds of diode-side-pumped modules were designed with different output power levels of 170 W and 800 W. The maximum optical to optical conversion efficiency is 37%. 