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We propose a theoretical method of pumping optimization for the Er-Yb laser based on the concept of a self-cooling laser. The pumping optimization realizes the anti-Stokes fluorescence cooling and excitation transfer by the Yb ions simultaneously. In this case, the Yb ions become the sources of cooling while the Er ions remain the heating sources. With a certain ratio between the cooling and heating sources, the operating temperature of the laser medium can be stabilized. We simulate the pumping process for the parameters of the Er, YbYA
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