Passively Mode-Locked Fiber Laser and the Application in Optical Frequency Metrology

摘要

Passively mode-locked fiber laser and the application in optical frequency metrology were introduced. The frequency of an unknlown laser was measured using two fiber laser combs operated in different repetition rates. The difference in mode number and the mode number were determined by simple processes. An optical frequency counter can be realized when the whole measurement process can be operated automatically. The measurement of optical frequency can be as simple as that of microwave frequency in the near future.