Abstract:

Experiment on high repetition rate all-fiber passive modelocked femtosecond laser are reported. Upon all-fiber ring cavity structure and nonlinear polarization rotation saturable absorber, we achieved stable run of high repetition rate Er all-fiber modelocked femtosecond pulse. The highest repetition rate is 99.91MHz. The spectrum FWHM is 25nm at center wavelength of 1570nm. The pulse duration is 194fs. The dynamics characteristics of the all-fiber passive modelocked laser at different repetition rate is studied. The research offer one way of compact and high stable ultrafast optical source for application in the optical frequency comb generation.

Key words: laser techniques, high repetition rate, all-fiber, femtosecond laser