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Generation of radially polarized beams in a Nd:YAG laser with self-adaptive overcompensation of the thermal lens

机译:在Nd:YAG激光器中产生径向偏振光束并具有热透镜的自适应过度补偿

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Thermal effects such as lensing and birefringence negatively affect the beam quality and limit the power range of solid-state lasers. Self-adaptive overcompensation of the thermal lens is an answer to this problem. It provides a laser system with good beam quality and large stability range. Because the focal length of the thermally induced lens is different for the radial and the tangential polarization, overcompensation can be used to discriminate these two polarizations. Exploiting this method, we demonstrate the generation of radially polarized beams in a self-adaptively overcompensated high-power Nd:YAG laser with an output power of 155 W and an M~(2) of less than 10.
机译:透镜和双折射等热效应会对光束质量产生负面影响,并限制了固态激光器的功率范围。热透镜的自适应过度补偿是此问题的答案。它提供了具有良好光束质量和较大稳定范围的激光系统。由于热感应透镜的焦距对于径向和切向偏振是不同的,因此可以使用过度补偿来区分这两个偏振。利用这种方法,我们演示了在输出功率为155 W,M〜(2)小于10的自适应过度补偿高功率Nd:YAG激光器中产生径向偏振光束的情况。

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