光纤激光非相干组束技术的研究进展

Recent progress of incoherent fiber lasers beam combination

光纤激光非相干组束技术作为可以大幅提高光纤激光器输出功率的有效手段已经引起了越来越多的关注。当前光纤激光非相干组束研究方法为偏振组束和波长组束。尤其介绍了波长组束方面的研究进展,包括MOPA结构、三光栅结构和PTR布拉格光栅结构的波长组束。对各组束光束的性能参数进行了一定的分析对比,最后对非相干组束发展中存在的问题进行了探讨。

As an effective means to well improve the power of the fiber laser, more and more attentions has been concentrated on the incoherent beam combining of the fiber lasers. The basic principles and structures of maintream methods in the incoherent beam combining of fiber lasers which includes polarization beam combination and wavelangth beam combination are introduced. Especially the progress of the latter, which contains the MOPA structure, three gratings structure and the PTR - brag grating structure wavelength beam combination. The performance parameters of the combined beam are analysed and contrasted. Finally, the problems in the development of the incoherent beam combination are discussed.