Abstract

A diode-side-pumped high-power $1319\mathrm{nm}$ single-wavelength Nd:YAG continuous wave (cw) laser is described. Through reasonable coating design of the cavity mirrors, the $1064\mathrm{nm}$ strongest line as well as the $1338\mathrm{nm}$ one have been successfully suppressed. The laser output powers corresponding to four groups of different output couplers operating at $1319\mathrm{nm}$ single wavelength have been compared. The output coupler with the transmission $T=5.3\%$ has the highest output power, and a $131\mathrm{W}$ cw output power was achieved at the pumping power of $555\mathrm{W}$. The optical–optical conversion efficiency is 23.6%, and the slope efficiency is 46%. The output power is higher than the total output power of the dual-wavelength laser operating at $1319\mathrm{nm}$ and $1338\mathrm{nm}$ in the experiment.

© 2007 Optical Society of America

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