摘要
为了发展一种引发脉冲HF/DF激光器的新型放电技术。采用均匀粗糙表面的阴极在注入能量密度高达200 J/L时仍可在激光介质中获得均匀稳定的体放电。优点是无需任何预电离,且对电极面型无特殊要求。针-盘电极实验表明,在非链式脉冲HF/DF激光介质中单通道放电表现为扩散均匀的辉光放电,板-板电极的体放电从粗糙阴极开始,阴极表面产生许多明亮的圆形亮点,每一个亮点随后形成一条向阳极扩散的通道,这些扩散的通道相互重叠形成了空间均匀的体放电。初步实验结果表明,采用这种技术可以实现高能、高重复频率的脉冲HF/DF激光输出。
A new approach has been brought forward to obtain glow discharge in non-chain HF/DF laser. It has been shown a volume discharge is forming in non-uniform electric-field without preionization in SF6 and C2H6 mixtures, the energy deposition up to 200J/L. The discharge in the pin-plane gap is a diffuse jet expanding towards the anode with a bright plasma domain at the cathode. The discharge in the plane-plane gap is presented with many diffuse channels attached to bright circular cathode spots that diverge towards the anode, with the channels overlapping, form a spatially uniform glow discharge. The experimental results indicate that the new discharge type in SF6 and C2H6 mixtures is promising for creation of high energy and high frequency HF/DF laser.
出处
《激光技术》
CAS
CSCD
北大核心
2008年第2期119-121,共3页
Laser Technology
基金
国家安全重大基础研究资助项目(5132802.2.6)
国家自然科学基金资助项目(60708005)
