内损耗调制锁模最佳调制深度估算

推导出一个内损耗调制销模激光器的最佳调制深度估算公式。公式表明最佳调制深度是激光器各工作参数的函数。     

Experimental Research of ZnO Surface Flashover Trigger Device of Pseudo-Spark Switch

Pseudo-spark switch（PSS） is one of the most widely used discharge switches for pulse power technology.It has many special characteristics such as reliability in a wide voltage range,small delay time,as well as small delay jitter.In this paper,the measuring method for the initial plasma of ZnO surface flashover triggering device of PSS is studied and the results of the measurement show that the electron emission charge is mainly influenced by trigger voltage,gas pressure and DC bias voltage.When the bias voltage increases from 2 kV to 6 kV with the gap distancc fixed at 3 mm,the electron emission charge changes from 2 μC to about 6μC.When the gap distance changes from 3 mm to 5 mm with the bias voltage fixed at 2 kV,the electron emission charge increases from 1.5 μC to 2.5μC.When the gap distance is 4 mm,the hold-off voltage of PSS is 45 kV at gas pressure of 2 Pa,the minimum operating voltage is less than 1 kV.So,the operating scope is from 2.22%to 99%of its self-breakdown voltage.The discharging delay time decreases from 450 ns to 150 ns when the trigger pulse voltage is 1 kV and the discharging voltage is changed from 1 kV to 12 kV.When the trigger pulse voltage is 6 kV,the discharging delay time is less than 100 ns and changes from 100 ns to 50 ns,and the delay jitters are less than30 ns.     

Al￣＋激光声光调制锁模

介绍了Ａｒ￣＋激光声光调制锁模实验，分析了Ａｒ￣＋激光锁模的特殊性。     

Ar^＋激光声光调制锁模

介绍了Ａｒ＾＋激光声光调制锁模实验，分析了Ａｒ＾＋激光锁模的特殊性。     

水平连铸中间包用镁质涂料的研制与应用

研究了多种因素对镁质涂料性能的影响，介绍了镁质涂料在水平连铸中间包的应用。结果表明研制的镁质涂料具有良好的理化、使用及施工性能，完全能够满足水平连铸生产的需要。