Open AccessDissipative-soliton mode locked laser based on large-mode-area photonic crystal fiber
Author(s) -
Xin Zhang,
Minglie Hu,
Yuming Song,
Li Chai,
Qingyue Wang
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.1863
Subject(s) - dissipative soliton , fiber laser , optics , laser , materials science , photonic crystal fiber , soliton , dispersion (optics) , pulse (music) , mode locking , bandwidth limited pulse , femtosecond pulse shaping , saturable absorption , physics , ultrashort pulse , optical fiber , nonlinear system , quantum mechanics , detector
A dissipative-soliton mode locked laser based on Yb-doped single polarization large-mode-area photonic crystal fiber is demonstrated. The dissipative soliton dynamics is explored by numerical simulation. Compared with all normal dispersion fiber lasers, there are more pulse shaping mechanisms in a dissipative-soliton fiber laser, including the nonlinear absorption of SESAM, spectrum filtering of the chirped pulse and gain dispersion, which results in robust and stable operation. Among them, spectrum filtering plays a dominant role in mode-locking, it shapes pulse both in frequency domain and time domain and keeps the pulse duration below 1 ps in the cavity. For the first time, sub-1 ps pulse is directly generated in a dispersion compensation free cavity. The fiber laser directly generates 777 fs pulse at 1 W average power at a repetition rate of 514 MHz, corresponding to a single pulse energy of 20 nJ.