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Diode-end-pumped solid state lasers

机译：二极管泵浦固态激光器

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Abstract: of achieving high-power diode-end pumped lasers is to angularly multiplex several diodes on each end of the laser rod. We have successfully multiplexed four 15 W diode arrays on each end of a 6.3 mm diameter $MUL 7.5 mm long Nd:YAG rod to produce an $APEQ 2 mm diameter pump spot. Higher laser power was achieved by adding a second laser rod pumped at both ends. The addition of the second rod facilitates thermally induced birefringence compensation by introducing a quartz polarization rotator between the rods. In addition, it was necessary to add an aspheric lens to compensate the thermal aberration induced at these high, nonuniform pump powers. With this arrangement, $GRT 90 W has been extracted multimode, and $GRT 60 W in a near-diffraction-limited beam. !5
机译：摘要：实现大功率二极管端泵浦激光器的方法是在激光棒的每一端对多个二极管进行角度复用。我们已经成功地在直径6.3毫米的$ MUL 7.5毫米长的Nd：YAG棒的每一端上多路复用了四个15 W二极管阵列，以生产直径2毫米的$ APEQ泵浦光斑。通过增加两端泵浦的第二根激光棒，可以获得更高的激光功率。通过在杆之间引入石英偏振旋转器，第二杆的添加有助于热感应双折射补偿。另外，有必要增加一个非球面透镜以补偿在这些高的，不均匀的泵浦功率下引起的热像差。通过这种安排，已将$ GRT 90 W提取为多模信号，将$ GRT 60 W提取为近衍射极限光束。 ！5

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