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光纤激光器合成技术作为有望突破单根光纤激光器输出功率限制的方案之一而备受关注,发展非常迅速。利用相同数量的激光器,相干合成理论上能够得到更高的轴上光场强度,更集中的远场能量分布,从而得到广泛关注。文中从4个方面对光纤激光器的相干合成技术进行了介绍:自组织相干合成技术、外腔选模相干合成技术、相位实时控制相干合成技术和SBS相干合成技术。详细介绍每一种方案的发展现状和实验进展,并讨论了各方案的可扩展性。最后,对光纤激光器相干合成技术发展的相关问题进行了简要的探讨。
Fiber laser synthesis technology is expected to break through the single fiber laser output power of one of the programs and concern, the development is very rapid. With the same number of lasers, coherent synthesis theoretically can get higher on-axis optical field intensity, more concentrated far-field energy distribution, which received widespread attention. In this paper, the coherent synthesis of fiber laser is introduced from four aspects: self-organizing coherent synthesis, external cavity selective coherent synthesis, phase real-time control coherent synthesis and SBS coherent synthesis. Details of each program development status and experimental progress, and discussed the scalability of various programs. Finally, the related problems of the development of the fiber laser coherent synthesis technology are briefly discussed.