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Yb:CaGdAlO_4 thin-disk laser with 70% slope efficiency and 90 nm wavelength tuning range

机译:Yb:CaGdAlO_4薄盘激光器,斜率效率为70%,波长调谐范围为90 nm

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Thin-disk laser experiments with Yb:CaGdAlO_4 (Yb:CALGO) have been performed. A slope efficiency of 70% and an optical-to-optical efficiency of 57% could be achieved with a maximum output power of 30.7 W. These are so far the highest efficiencies obtained with this material. Furthermore, tuning experiments were carried out leading to a tuning range of 90 nm in total and 50 nm with more than 20 W of output power. This is to the best of our knowledge the widest wavelength tuning range of any material demonstrated at this power level. For all experiments the thermal evolution of the crystal surface temperature during laser operation was investigated.
机译:使用Yb:CaGdAlO_4(Yb:CALGO)进行了薄盘激光实验。最大输出功率为30.7 W时,可以实现70%的斜率效率和57%的光学效率。这是迄今为止使用该材料获得的最高效率。此外,进行调谐实验后,调谐范围总计为90 nm,调谐范围为50 nm,输出功率超过20W。据我们所知,在此功率水平下,所展示的任何材料都具有最宽的波长调谐范围。对于所有实验,研究了激光操作过程中晶体表面温度的热演化。

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