CAJ | 학술논문

依据非链式脉冲氟化氘(DF)激光器的反应机理,采用速率方程理论,综合考虑了基态DF分子、D2分子、D原子、F原子对激发态DF分子的消激发作用,建立了非链式脉冲DF激光器反应动力学模型.运用Runge-Kutta法对该模型进行数值计算,得到了增益区内各组分粒子数密度随时间的变化关系.进而运用该模型研究了工作气体配比和输出镜反射率对DF激光器腔内光子数密度、单脉冲能量、脉冲宽度和输出功率的影响,得到了最佳气体配比和最佳输出镜反射率参数.采用放电引发方式对非链式DF激光器进行了实验研究,实验测得脉冲波形及单脉冲能量与速率方程理论模型计算结果基本一致.本文的研究结果可为非链式脉冲DF激光器的优化设计提供理论参考.
의거비련식맥충불화도(DF)격광기적반응궤리,채용속솔방정이론,종합고필료기태DF분자、D2분자、D원자、F원자대격발태DF분자적소격발작용,건립료비련식맥충DF격광기반응동역학모형.운용Runge-Kutta법대해모형진행수치계산,득도료증익구내각조분입자수밀도수시간적변화관계.진이운용해모형연구료공작기체배비화수출경반사솔대DF격광기강내광자수밀도、단맥충능량、맥충관도화수출공솔적영향,득도료최가기체배비화최가수출경반사솔삼수.채용방전인발방식대비련식DF격광기진행료실험연구,실험측득맥충파형급단맥충능량여속솔방정이론모형계산결과기본일치.본문적연구결과가위비련식맥충DF격광기적우화설계제공이론삼고.
Based on the reaction mechanism of non-chain pulsed DF laser and taking into consideration the deactivation of the stimulated DF molecules by ground state DF molecules, D2 molecules, D atoms, F atoms, the dynamical model for non-chain pulsed DF laser is established using the rate equation theory. Through solving this model with Runge-Kutta method, the dependence of species concentration in the gain area on time is obtained. Then the effects of the working gas ratio and the reflectance of output mirror on photon number density, single pulse energy, pulse width and output power are studied in light of this model. The optimum parameters of the working gas ratio and the reflectance of output mirror are attained based on the theoretical calculation. The pulse waveform and single pulse energy of non-chain pulsed DF laser calculated by using the rate equations theory agree well with experimental data based on electric-discharge. These results would provide a theoretical support for the optimization of non-chain pulsed DF laser.