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在放电激励重复频率气体激光研究中,激光器重复频率运行能量稳定输出是提高其输出平均功率及其实用化的基础。利用实验室已建立的单脉冲输出能量焦耳级的放电激励重复频率脉冲HF激光装置,通过调节气体介质循环速率及优化实验条件,开展激光器重复频率运行稳定输出实验研究,获得激光器重复频率运行时能量稳定输出的最佳工作条件。研究结果表明,随着运行频率的上升,激光输出能量衰减较快;增大气体介质循环速率有利于改善放电稳定性,提高激光器重复频率运行时输出能量稳定性。当混合气体工作介质以3.5m/s的流速循环时,激光器可实现1～50Hz重复频率激光输出,在重复频率50Hz运行时稳定输出能量约130mJ,能量波动约5%。
In the discharge excitation repetition frequency gas laser research, the stable output of the laser repetition frequency operation energy is the basis to increase the output average power and its practical application. By using the single-pulse output energy Joule-class discharge-excited repetitive-frequency pulsed HF laser device established in the laboratory, experimental studies on stable output of laser repetition frequency operation were carried out by adjusting the gas medium circulation rate and optimizing the experimental conditions. The energy of laser repetition frequency operation Stable output of the best working conditions. The results show that with the increase of the operating frequency, the laser output energy decays rapidly. Increasing the gas medium circulation rate can improve the discharge stability and increase the output energy stability when the laser repetition rate is operated. When the mixed gas working medium circulates at a flow rate of 3.5m / s, the laser can achieve laser output of 1 ~ 50Hz repetition rate, stable output energy of about 130mJ and energy fluctuation of about 5% when operating at repetition rate of 50Hz.