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(Color online) Absorption coefficient (solid lines) and effective emission cross section (dotted line) of YAG ceramics doped with different ion concentrations at room temperature. The inset shows the variation of the absorption coefficient as a function of ytterbium doping concentration for Yb:YAG ceramics.
Schematic diagram of laser-diode-pumped microchip Yb:YAG ceramic laser.
(Color online) Output power as a function of the absorbed pump power for different transmissions of the output coupler. (a) Transition from oscillation with increase of pump power for : (I) oscillation, (II) dual-wavelength oscillation at 1030 and , and (III) oscillation. (b) oscillation for , 15%, and 20%, respectively. The solid lines are the linear fitting for and 10%, respectively.
(Color online) Laser spectra of Yb:YAG ceramic lasers under different pump power levels for (a) and (b) .
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