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首页> 外文期刊>Japanese Journal of Applied Physics. Part 1, Regular Papers, Brief Communications & Review Papers >Effective Suppression of Beam Divergence for High-Power Laser-Diode Stack Based on External-Cavity Technique
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Effective Suppression of Beam Divergence for High-Power Laser-Diode Stack Based on External-Cavity Technique

机译：基于外腔技术的高功率激光二极管叠堆光束发散的有效抑制

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摘要

We demonstrate an off-axis external-cavity configuration designed to effectively suppress the beam divergence of a high-power laser-diode stack. The off-axis external cavity consists of a set of beam-transformation systems and a stripe mirror. Thirty-eight off-axis external-cavity laser diodes are individually formed for the high-power laser-diode stack. At a drive current of 40 A, the divergence angle of the slow axis is reduced from 7.6° without the external cavity to 1.6° with the external cavity. The external-cavity laser-diode stack achieves a cw power output of 45 W, or 72.4% of the cw power output of a free-running laser-diode stack.
机译：我们演示了一种离轴外腔配置，旨在有效抑制高功率激光二极管堆栈的光束发散。离轴外腔由一组光束转换系统和一个条纹镜组成。大功率激光二极管叠层分别形成了38个离轴外腔激光二极管。在40 A的驱动电流下，慢轴的发散角从无外腔的7.6°减小到有外腔的1.6°。外腔激光二极管堆栈实现的CW功率输出为45 W，或自由运行激光二极管堆栈的CW功率输出的72.4％。

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