Laser light path: Laser optical path is commonly known as the laser propagation path, in practice, the laser 80% can not be directly satisfied with the applicat...

1, IntroductionFemtosecond (Femtosecond,fs), also known as millimicroseconds, is 10^-15 s. Femtosecond lasers operate in the form of pulses with a duration of o...