基于分段腐蚀的高功率包层光剥离器实验研究

Experimental Analysis of High-Power Cladding Power Stripper Based on Segmented Corrosion

为提高高功率光纤激光器的光束质量,降低制作成本,避免剥除包层光时出现异常高温,基于20/400μm的国产传能光纤,以低成本的玻璃蒙砂膏(TBS-307)为腐蚀剂,通过分段腐蚀法制备了长度为5 cm的5段分段式中心对称结构的包层光剥离器。在将包层光剥离器分别正向和反向接入测试系统的情况下,输入488 W泵浦光功率时,输出功率均只有15.3 W左右,功率衰减系数达15 dB。在没有水冷散热的条件下,剥离器的激光输入端的三段最高工作温度稳定在120℃左右,且整体温度分布比较均匀,没有发现明显的异常热点。上述内容表明所制作的包层光剥离器可以满足高功率光纤激光器的应用要求,达到降低成本,提高光束质量和稳定性的目的。

To enhance the beam quality,reduce manufacturing costs,and prevent overheating during cladding power stripping,this study utilizes a domestic 20/400μm energy transmitting fiber.A costeffective glass etching cream(TMS307)serves as the etching agent.By applying segmented etching,a cladding power stripper with five symmetrically structured sections,each 5 cm long,is developed.Tests of the cladding power stripper,both in forward and reverse configurations,reveal that with an input power of 488 W,the output power is approximately 15.3 W,and the power stripping efficiency reaches 15 dB.Notably,without watercooling,the peak operating temperature at the laser input terminal of the stripper remains stable around 120℃.The temperature distribution is relatively uniform,with no significant hot spots detected.These results indicate that the cladding power stripper successfully meets the demands of highpower fiber lasers,offering cost reduction,improved beam quality,and enhanced stability.