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短蒸气室自加热碱金属激光器的原理是利用未被增益介质吸收的抽运光加热碱金属蒸气室。基于三能级速率方程,建立了半导体激光双端抽运碱金属激光器的理论模型,研究了增益介质长度、蒸气室温度和抽运源线宽等参数对短蒸气室自加热碱金属激光器输出激光的影响。研究结果表明,在普通外腔半导体激光器抽运下,增益介质长度为2mm时可以实现瓦级激光输出,选择较高的抽运光功率可提高自加热碱金属激光器的输出功率。该研究结果将为自加热碱金属激光器的实验提供理论基础,并可进一步拓展小功率碱金属激光器的应用领域。
The principle of short steam cell self-heating alkali metal lasers is to heat the alkali vapor chamber with a pump light that is not absorbed by the gain medium. Based on the three-level rate equation, the theoretical model of the double-end pumping of alkali metal laser with semiconductor laser was established. The effects of gain medium length, vapor chamber temperature and pumping line width on the short-chamber self-heating alkali metal laser output laser Impact. The results show that the watt-level laser output can be realized when the gain medium length is 2mm, and the higher pump power can increase the output power of the self-heating alkali metal laser. The results of this study will provide the theoretical basis for the experiment of self-heating alkali metal lasers and further expand the application fields of low-power alkali metal lasers.