科研之友
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摘要
We report on an efficient diode-end-pumped polycrystalline Yb:Y2O3 ceramic laser. Continuous-wave output power of 4.2'W at 1078 nm was obtained under pump power of 19.5 W. The corresponding slope efficiency was 29%. The beam quality factor (M-2) at full pump power was measured to be 1.63. The threshold wavelengths of the laser at various output couplings were also investigated. It was found that the threshold wavelengths shifted similar to5 nm when the reflectivity of the output, coupler changed from 90% to 99.9%, as caused by the strong reabsorption effect in the ceramic sample.
- 出版日期2004-6-1
- 单位南阳理工学院
