Auroux Sandrine, Kermène Vincent, Desfarges-Berthelemot Agnès, Barthélémy Alain
XLIM, UMR CNRS 6172, 123 Avenue A. Thomas, 87060 Limoges Cedex, France.
Opt Express. 2009 Sep 28;17(20):17694-9. doi: 10.1364/OE.17.017694.
Phase locking of two fiber lasers is obtained by mutual injection. The coherence properties of this composite laser are analyzed. In the most general case, the radiations at the two output mirrors of the laser are not mutually coherent. The cross-correlation of the two emitted beams shows that an extra-cavity delay line is required to get stable and high visibility interference fringes. Such a laser configuration is attractive for coherent beam combining in the far field provided the multiple output beams are properly time delayed.
通过相互注入实现了两个光纤激光器的锁相。分析了这种复合激光器的相干特性。在最一般的情况下，激光器两个输出镜处的辐射并非相互相干。对两束出射光束的互相关表明，需要一个腔外延迟线来获得稳定且可见度高的干涉条纹。如果多个输出光束能得到适当的时间延迟，这种激光配置对于远场中的相干光束合成很有吸引力。
