1. What is an ultrafast fiber femtosecond laser

A femtosecond fiber laser is a femtosecond pulse laser based on optical fiber, including a gain medium made of optical fiber and a mode-locked resonator made of optical fiber. Fiber femtosecond lasers are considered to be a new generation of femtosecond lasers because they have the advantages of miniaturization, portability, air cooling, low cost, and high stability. They are the core seed light source of fiber frequency combs. Basic scientific instruments.

2. The basic principle of ultrafast fiber femtosecond lasers

As the core component of many ultrafast laser application systems, the performance of ultrafast fiber lasers is the primary limiting factor of the entire application system. However, there are still many areas that need to be improved and enhanced in terms of performance of ultrafast fiber lasers, so improving their performance is still one of the current research directions of ultrafast fiber lasers. In the future, narrower pulse widths, higher power outputs, higher repetition rates, pulse shapes, and expansion of pulse wavelength ranges will be areas that researchers will focus on. Only when the overall performance of each dimension is steadily improved can the application needs of different fields be better met.