摘要
研究了某些光学玻璃在皮秒和飞秒激光照射下产生的暗化 (darking)特性。测量了玻璃在 810nm飞秒激光照射前后的吸收光谱 ,并进行了比较与分析。玻璃在超短脉冲激光照射后发生暗化 ,是因为玻璃内生成色心的结果。同时提出了解释超短脉冲飞秒激光引起玻璃产生色心的机理。上述暗化具有热擦除性 ,在 2 0 0℃下热处理几分钟后 。
Picosecond and femtosecond laser induced darking in some optical glass were studied. Absorption spectra of the original and irradiated glasses were measured. It is believed that the darking was induced by color center generation. The mechanism of the color center generation was demonstrated. Darking area disappeared after heat treatment under 200℃ for a few minutes.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2001年第7期603-606,共4页
Chinese Journal of Lasers
关键词
暗化
光学玻璃
皮秒
飞秒脉冲激光
darking, ultra short laser, optical glass, color center
