摘要
A great deal of progress has been made in self-mode-locked Ti: sapphire laser since itwas invented in 1991. It has already found wide uses owing to its broad spectrum abilityto generate short pulses, high output power, simple setup and good stabilities. Recentlypulses as short as 8.5 fs have been generated by a laser of this kind. By improving com-
基金
National Natural Science Foundation of China.
