摘要
单个子源的稳定度指标是多源相干合成技术的关键。文章首先对脉冲源稳定度指标进行了定义，并指出全固态纳秒脉冲源具有较高的稳定度指标，在相干合成中具有潜在优势。对脉冲时基抖动、波形抖动机理进行了深入分析，给出了高稳定度子源设计的关键技术途径，采用过触发、欠容量等具体改善方案，有效提高了子源的时基稳定度和波形稳定度，单个子源脉宽抖动小于等于1％，峰值抖动小于等于1％，单次短时抖动小于等于20ps，长时漂移小于等于100ps／min。最终成功实现了256单元的16×16路电路-空间综合合成，研制出30MW全固态高稳定度多路相干合成纳秒脉冲源，脉冲源16路输出端口最大时基离散度小于30ps，合成峰值电压抖动小于1％，合成峰值电压效率可达到90％～95％。
The stability of a cell pulse source is a key index in multi-source＇s synchronization. The stability index of pulse source is defined in this article. Potential advantage of full-solid nanosecond pulse sources for synchronizing is remarked, because of its high stability. Mechanisms of pulser＇s time drift and wave flutter are analyzed, and the key technology routes are given, ineluding over triggering and deficit charging, to improve the cell pulser＇s stability. And the stability indexes reach as follows： the short time jitter less than 20 ps per times, the long time drift less than 100 ps/min, the pulse width jitter less than 1%, and the peak voltage jitter less than 1%. Finally, integrating both circuit and space synchronizations, synchronizations of 16 × 16 elements are realized, and a 30 MW full-solid high-stability synchronization-synthesis pulser is finished, which time base differences of all 16 channels are less than 30 ps. sum peak voltages jitter less than 1%, and the whole synthesis efficiency reaches 90% to 95 %.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2006年第6期1041-1045,共5页
High Power Laser and Particle Beams
基金
国家863计划项目资助课题
