260 W波长锁定光纤耦合输出泵浦模块实验研究 |
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引用本文: | 吴华玲,雷军,郭林辉,王丞乾,谢鹏飞,刘雨萱,张永刚,程心刚,李潇潇,吕文强,王昭,高松信.260 W波长锁定光纤耦合输出泵浦模块实验研究[J].强激光与粒子束,2022,34(6):061002-1-061002-5. |
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作者姓名: | 吴华玲 雷军 郭林辉 王丞乾 谢鹏飞 刘雨萱 张永刚 程心刚 李潇潇 吕文强 王昭 高松信 |
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作者单位: | 1.中国工程物理研究院 高能激光科学与技术重点实验室,四川 绵阳 621900 |
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基金项目: | 装备预研共用技术项目(41414060102); |
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摘 要: | 半导体光纤耦合输出泵浦源是光纤激光器的核心器件,其性能直接制约光纤激光器的输出水平。采用COS封装的高功率LD芯片,通过VBG外腔光谱锁定和精密光束整形变换技术,结合偏振合束与精密聚焦耦合技术将18个LD单元耦合进105 μm/NA0.22光纤,获得不低于260 W功率输出。实验表明,该模块在注入电流18 A时,可获得稳定输出连续功率264 W,对应电光效率52%,输出光谱中心波长975.92 nm,谱宽0.51 nm。该设计为获得高功率、高亮度波长稳定泵浦源提供了一条可行途径,光纤耦合输出模块工程化后可广泛应用在光纤激光器泵浦等领域。
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关 键 词: | 半导体激光器 光纤耦合 波长锁定 光束整形 |
收稿时间: | 2021-12-12 |
Experimentation of 260 W wavelength stabilized fiber-coupled diode laser pumping model |
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Affiliation: | 1.Key Laboratory of Science and Technology on High Energy Laser, CAEP, Mianyang 621900, China2.Institute of Applied Electronics, CAEP, Mianyang 621900, China |
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Abstract: | As pump station, fiber-coupled diode laser source is one of the key elements of fiber laser, its performance restricts the output level of the fiber laser directly. Aimed at a multi-mode fiber of 105 μm core diameter and 0.22 numerical aperture, a 260 W-level high-brightness fiber-coupled diode laser model based on single-emitter-COS (chip on submount) is developed. In the design, volume Bragg grating (VBG) is used to control the spectrum of the corresponding emitter at a narrow bandwidth (about 0.5 nm), and the beam shaping technologies, polarization multiplexing and aspherical lens are taken to couple the 18 LD beams into the multi-mode fiber. The experiment indicates that, the beam shaping system can couple the 18 LD beams into the fiber, and the output power can achieve 264 W, with the E-O efficiency of 52% at operation current 18 A. Simultaneously, the central wavelength of the model is locked at 975.92 nm with an FWHM of 0.51 nm. This design offers a feasible approach to the spectral-controlled fiber-coupled diode laser. The engineered fiber-coupled diode laser system can be widely used in fiber pumping and many other areas. |
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