Opt Lett. 2023 Feb 15;48(4):1080-1083. doi: 10.1364/OL.483315.
In this Letter, a new strategy for the spectral beam combining (SBC) of an individual laser diode (LD) bar based on a polarization multiplexing external cavity is proposed and demonstrated. The maximum combining efficiency is up to 95.51%, which leads to an output power of 76.6 W and an electro-optic conversion efficiency of 48.33% under continuous wave operation at a current of 100 A. Compared to the conventional SBC, the combining efficiency, the output power, and the electro-optical conversion efficiency present improvements of 12%, 10W, and 6%, respectively. The results show that this novel SBC method is a prospective technique for increasing the combining efficiency of LD bars.
在这封信件中，提出并展示了一种基于偏振复用外腔的单个激光二极管（LD）条的光谱光束组合（SBC）的新策略。在 100A 的连续波操作下，最大组合效率高达 95.51%，可获得 76.6W 的输出功率和 48.33%的电光转换效率。与传统的 SBC 相比，组合效率、输出功率和电光转换效率分别提高了 12%、10W 和 6%。结果表明，这种新颖的 SBC 方法是提高 LD 条组合效率的一种很有前途的技术。
