The temporal dynamics of diode-side-pumped Yb – Er laser, with a passive Co2+ : MgAl2O4 Q switch illuminated by a light beam (total fluence of 0.15 – 0.16 J cm−2) from a semiconductor pulsed module, is investigated. It is shown that, using this external illumination, one can change the lasing onset delay and the time jitter ΔTgi. The dependence of ΔTgi on the interval between the instant of switching the illumination module on and the lasing peak position ti has a minimum at |ti| ≈ 10 μs. The decrease in ΔTgi with a change in |ti| from 90 to 10 μs indicates that instant of lasing peak occurrence for the Yb – Er laser is partially controlled by the pulse from the highly stable semiconductor module. If |ti| < 10 μs, the enhanced luminescence fluence in the cavity of Yb – Er laser exceeds 0.16 J cm−2; the light beam from the module does not affect much the lasing process in the ytterbium – erbium laser; and, as a consequence, the time jitter recovers the initial value.

中文翻译：

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具有被动 Q 开关的二极管泵浦 Yb、Er 激光器在高功率外部光下的发射动力学

研究了二极管侧泵浦 Yb-Er 激光器的时间动态特性，该激光器具有被来自半导体脉冲模块的光束（总通量为 0.15 – 0.16 J cm-2）照射的被动 Co2+:MgAl2O4 Q 开关。结果表明，使用这种外部照明，可以改变激光起始延迟和时间抖动 ΔTgi。ΔTgi 对打开照明模块的瞬间和激光峰值位置ti 之间的间隔的依赖性在|ti| 处具有最小值。≈ 10 微秒。ΔTgi 随 |ti| 的变化而减小 从 90 到 10 μs 表明 Yb-Er 激光器的激光峰值出现瞬间部分由来自高度稳定的半导体模块的脉冲控制。如果|ti| < 10 μs，Yb-Er激光器腔内增强的发光通量超过0.16 J cm-2；来自模块的光束对镱-铒激光器的激光过程影响不大；结果，时间抖动恢复到初始值。