【摘要】 简要概述了半导体激光器抽运碱金属蒸气激光器(DPAL)的研究背景与独特优势,介绍了DPAL主振荡功率放大器(MOPA)在国内外的发展现状。构建了基于碱金属原子三能级受激吸收-受激辐射理论的端面抽运DPALMOPA系统的速率方程模型并进行了系统的理论计算,分析了DPAL-MOPA的输出功率和提取效率随蒸气池温度、蒸气池长度、抽运功率和抽运光束的束腰半径的变化特性。与已发表的实验结果对比后发现,理论计算结果和实验数据十分吻合,验证了该理论模型的有效性。该研究对构建定标放大的DPAL系统具有理论指导意义。更多还原

【Abstract】 After the introduction of technical background and unique merits of a diode-pumped alkali laser(DPAL),the present research conditions are described in development of master oscillator power-amplifier(MOPA) for DPALs. The systematic calculation is carried out after construction of a rate-equation model of an end-pumped DPAL-MOPA system using the three-level stimulated absorption-stimulated emission theory of an alkali atom.The output power and extraction efficiency are analyzed when the temperature, cell length, pump power, and waist radius are varied, respectively. Compared with the experimental data, the calculated results are in coincident with them, which demonstrates the developed model is effective. The research is thought to be useful in realization of the power scaling of a DPAL system.更多还原