A novel diffusion double-ended bonded structure (DEBS) consisting of F2 glass, Er${}^{3+}$/Yb${}^{3+}$: glass and Co${}^{2+}$:MgAl${}_2$O${}_4$ was reported, for human eye-safety micro-ranging lasers. Compared with single-ended bonding structure (SEBS) and single glass structure (SGS) by the thermal analysis, its thermal focal length increased by 53.8% over the latter two. It was noted that the DEBS could effectively reduce the thermal effect of the gain medium. Under the identical experimental conditions, the DEBS’s laser performance characteristics were significantly better than the other two. The peak power and laser stability of the DEBS could be dramatically improved more 45.4% and 100%, respectively. Finally, the DEBS laser delivered 340 $\mathrm{\mu }$J pulse energy with 10 Hz repetition rate, 5.5 ns pulse duration and 1.4 of beam quality factors M². Such an eye-safe compact laser can be applied in ranging systems, such as drones and low-altitude missiles.

一种由 F2 玻璃、Er 组成的新型扩散双端键合结构 (DEBS)${}^{3+}$/Yb${}^{3+}$: 玻璃和 Co${}^{2+}$:镁铝${}_2$哦${}_4$据报道，用于人眼安全的微测距激光器。热分析与单端键合结构（SEBS）和单玻璃结构（SGS）相比，其热焦距比后两者增加了53.8%。注意到DEBS可以有效地降低增益介质的热效应。在相同的实验条件下，DEBS 的激光性能特性明显优于其他两种。DEBS 的峰值功率和激光稳定性可以分别显着提高 45.4% 和 100% 以上。最后，DEBS 激光器提供了 340$\mathrm{\mu }$J 脉冲能量具有 10 Hz 重复率、5.5 ns 脉冲持续时间和 1.4 的光束质量因子 M ²。这种对人眼安全的紧凑型激光器可用于测距系统，例如无人机和低空导弹。