CAJ | 학술논문

介绍了光纤激光器的理论模型和结构组成，搭建了976nm激光二极管（LD）泵浦的准连续输出双包层掺镱光纤激光器系统。制作了激光脉冲电源方波发生电路，该电源在脉冲工作模式下重频≤1000Hz，脉宽从10μs-50ms可调，占空比≤50％。分析了稀土掺杂双包层光纤的各项性能和能级系统，并实验研究了准连续掺镱双包层光纤激光器的输出特性。在最大泵浦功率为8．12w，重频为50Hz和脉宽为10ms下，测得其最大脉冲输出功率为2．67w。
개소료광섬격광기적이론모형화결구조성，탑건료976nm격광이겁관（LD）빙포적준련속수출쌍포층참의광섬격광기계통。제작료격광맥충전원방파발생전로，해전원재맥충공작모식하중빈≤1000Hz，맥관종10μs-50ms가조，점공비≤50％。분석료희토참잡쌍포층광섬적각항성능화능급계통，병실험연구료준련속참의쌍포층광섬격광기적수출특성。재최대빙포공솔위8．12w，중빈위50Hz화맥관위10ms하，측득기최대맥충수출공솔위2．67w。
The theoretical mode and structure composition of a fiber laser are introduced in this paper, and a double-clad Yb3+ -doped quasi-continuous wave fiber laser system is set up by using 976 nm LD as pumped source. A square wave generator circuit for the laser pulse power source is developed, which can offer a repe- tition frequency below 1 000 Hz, pulse adjustable width between 10 p,s and 50 ms and duty ratio under 50% in a pulse mode. The characteristics and energy level system of the 11 m Yb3+ doped double-clad fiber laser are researched, and its ouput characteristics are measured. The results show that the highest output power is 2.67 W at pulse width of 10 ms and repetition frequency of 50 Hz when the maximum pump power is 8. 12 W.