全光纤激光相干合成实验研究

Experimental Research on All-fiber Coherent Beam Combining

设计了由两支光纤激光器组成的迈克尔逊型全光纤激光器阵列。通过实验,分析输出光束的耦合相干性,分析两泵浦激光器泵浦功率比对耦合效率、泵浦效率及输出功率的影响,分析所设计的光纤激光器阵列的稳定性。结果表明:激光器阵列的输出功率等于子光纤激光器输出功率的相干合成,耦合效率相对稳定;未达到增益饱和的情况下,泵浦效率和输出功率均与泵浦功率比成递减关系。

The Micelson type all-fiber laser array composed by two fiber lasers was designed. By experiment ,the charaeter of coupling interference of output beam was analyzed. The relation between the ratio of the two pumping power and the coupling efficiency, the pumping efficiency, the output power, and the stability of this system was analyzed. Experimental analysis results showed that the output power of fiber laser array was equal to, the interference power of the two beams from the two embranchment lasers, and the coupling efficiency was correspondingly steady; and the pumping efficiency and the output power reduced as the ratio of pumping power increased without reaching plus saturation.