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讨论了光纤熔锥耦合外腔法改善二极管激光列阵光束质量的特点。采用多模光纤熔锥方法实现了两个半导体激光器(LD)之间的互注入。单模半导体激光器与光纤之间采用直接耦合的方法,耦合后两光纤输出功率都为5mW。互注入后LD1的波长由656.2nm变为657.2nm,光纤输出功率降为3mW,LD2波长由658.8nm变为658.2nm,光纤输出功率降为2.9mW。光纤熔锥时相向放置,激光束可直接进入对方谐振腔,不需再使用外腔反馈镜。
The characteristics of improving the diode laser array beam quality by using the fused-taper coupling external cavity method are discussed. The multi-mode fiber taper method is used to realize the mutual injection between two semiconductor lasers (LD). The method of direct coupling between the single-mode semiconductor laser and the optical fiber is adopted, and the output power of the two optical fibers after the coupling is 5mW. After the mutual injection, the wavelength of LD1 changes from 656.2nm to 657.2nm, the output power of optical fiber decreases to 3mW, the wavelength of LD2 changes from 658.8nm to 658.2nm, and the output power of optical fiber decreases to 2.9mW. Optical fiber melt taper when placed opposite, the laser beam can directly enter the other resonator, no longer need to use the external cavity feedback mirror.