光泵浦源重频运行稳定性

Operation stability of repetitively pulsed optical pumping sources

为了研究表面放电光泵浦源的重频运行稳定性,以高纯度Al2O3陶瓷作为放电基底,研制了重频分段线性表面放电光泵浦源模块,研究了不同条件下泵浦源模块的放电抖动和辐射强度波动。研究发现,当重复频率在110 Hz时,泵浦源的放电抖动主要受充电电压、触发脉冲电压和放电间隙长度的影响,随运行频率的变化较小;辐射强度波动主要与充电电压相关,基本不受混合气体气压和重复频率变化的影响。在合适的条件下,泵浦源的放电抖动〈30 ns,辐射强度波动优于2%。研究结果表明,该光泵浦源模块的重频运行稳定性良好。

An optical pumping source by segmented surface discharge on a Al2O3 ceramic substrate was developed to reliaze the pulse repetitive stability of surface discharge.The discharge jitter and the deviation of radiation intensity were investigated in detail under different conditions.The experimental results show that the discharge jitter mainly depends on the charging voltage,trigger pulse voltage and the distance of discharge gap,and the pulse repetition rate has a little influence on the discharge jitter in the range of 1 to 10 Hz.Furthermore,the deviation of radiation intensity mainly depends on charging voltage,and does not be affected by the pulse repetition rate and gas pressure.Normally,the discharge jitter can be less than 30 ns,and the deviation of radiaion intensity is below 2%.Research results indicate that the optical pumping source has good discharge stability.