Open AccessHigh-repetition-rate, stretch-lens-based actively-mode-locked femtosecond fiber laser
Author(s) -
Ruixin Wang,
Yitang Dai,
Feifei Yin,
Kun Xu,
Yan Li,
Jianqiang Li,
Jintong Lin
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.020923
Subject(s) - optics , fiber laser , laser , mode locking , femtosecond pulse shaping , bandwidth limited pulse , materials science , femtosecond , pulse shaping , bandwidth (computing) , lens (geology) , ultrashort pulse , physics , telecommunications , computer science
We propose and demonstrate a novel actively mode-locked fiber laser based on a stretch-type time-lens. The pulse generated by this scheme has high repetition rate and large bandwidth while no nonlinearity is participated. A 10-GHz chirped pulse train with 18-ps duration and 11.6-nm bandwidth is obtained, which is then extra-cavity compressed down to 825 fs. The pulse characteristics dependent on the cavity dispersion and time-lens strength are discussed. Pulse propagation in the laser is similar with dissipative soliton in all-normal-dispersion laser. The results demonstrate that the stretch-lens inside the actively mode-locked laser can effectively broaden the spectral bandwidth, instead of the fiber nonlinearity, which can then support a high-repetition-rate "linear dissipative soliton" pulse shaping in a very compact design.