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Optoelectronics 2021
自发辐射对Ho:YAG/SrWO4内腔拉曼激光器输出特性的影响
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Abstract:
文章通过数值模拟研究了自发辐射对Ho:YAG/SrWO4主动调Q内腔拉曼激光器输出特性的影响。在考虑自发辐射的情况下，建立了Ho:YAG/SrWO4主动调Q内腔拉曼激光器的速率方程模型。通过对速率方程进行数值模拟，研究了在不同脉冲重复频率下，自发辐射对拉曼激光器输出特性的影响。结果表明，自发辐射对拉曼激光器的脉冲宽度和峰值功率的影响较为明显。此外，在较低的吸收泵浦功率下，自发辐射对拉曼激光器的平均输出功率和脉冲能量有一定的影响；在较高的吸收泵浦功率下，自发辐射对平均输出功率和脉冲能量几乎没有影响。
In this paper, the effect of spontaneous radiation on the output performances of the Ho:YAG/SrWO4 actively Q-switched intracavity Raman laser was investigated by numerical simulation. The rate equation model of the Ho:YAG/SrWO4 actively Q-switched intracavity Raman laser was developed with consideration of spontaneous radiation. The effect of spontaneous radiation on the output performances of the Raman laser at different pulse repetition frequencies was investigated by numerical simulation of the rate equation. The results show that the effect of spontaneous radiation on the pulse width and peak power of the Raman laser was more obvious. In addition, at lower absorbed pump power, the spontaneous radiation had a certain effect on the average output power and pulse energy of the Raman laser; at higher absorbed pump power, the spontaneous radiation had almost no effect on the average output power and pulse energy.
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