Chen Xin, Yang Yide, Gong Mali, Su Ping, Ma Jianshe
Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China.
Department of Precision Instruments, Tsinghua University, Beijing, 100084, China.
Sci Rep. 2024 Nov 1;14(1):26331. doi: 10.1038/s41598-024-77317-6.
We demonstrate an all-fiber oscillator with high optical-to-optical efficiency using laser diodes working at 915nm as the pump sources to reduce the demand for thermal management. When the output power of the bidirectional pumped oscillator is 1.16kW, the optical-to-optical efficiency is as high as 75.4%. In this working state, the output characteristics of the oscillator are observed. The Raman suppression ratio is 41.23dB and the beam quality factor M = 1.14, M = 1.29. Analyzing the time trajectory of the highest power output, there are no significant characteristic peaks in the time domain signal and the frequency domain signal, which indicates that the oscillator has good stability.Improving the output characteristics of the 915nm pumping lasers has a positive significance for the application of non-strict ambient temperature control.
我们展示了一种全光纤振荡器，它使用工作在915nm的激光二极管作为泵浦源，具有高的光光效率，以降低热管理需求。当双向泵浦振荡器的输出功率为1.16kW时，光光效率高达75.4%。在此工作状态下，观察了振荡器的输出特性。拉曼抑制比为41.23dB，光束质量因子M² = 1.14，M² = 1.29。分析最高功率输出的时间轨迹，时域信号和频域信号中均无明显特征峰，表明该振荡器具有良好的稳定性。改善915nm泵浦激光器的输出特性对于非严格环境温度控制的应用具有积极意义。
