DocumentCode :
1323585
Title :
Passive Harmonically Mode-Locked Yb 
-Doped Fiber Laser Free From Anomalous Dispersion
Author :
Liu, Dongfeng ; Zhu, Xiaojun ; Wang, Chinhua ; Yu, Jianjun ; Zhang, Guiju ; Fang, Erxi ; Wang, Jiajun
Author_Institution :
Key Lab. of Adv. Opt. Manuf. of Jiangsu Province, Soochow Univ., Suzhou, China
Volume :
22
Issue :
23
fYear :
2010
Firstpage :
1726
Lastpage :
1728
Abstract :
We report on an all normal dispersion harmonically mode-locked ytterbium-doped femtosecond fiber laser. The mode-locking mechanism of the laser is based on nonlinear polarization evolution with strong pulse shaping. Bandpass filtering is achieved with a cascaded long-period fiber grating, forming highly chirped pulses. The laser generates stable 2.5-ps duration pulses at a repetition rate of 125.39 MHz that could be dechirped externally to 310 fs with a maximum pulse energy of 0.36 nJ.
Keywords :
band-pass filters; chirp modulation; diffraction gratings; fibre lasers; laser mode locking; optical fibre dispersion; optical fibre polarisation; optical filters; optical harmonic generation; optical pulse generation; optical pulse shaping; JkJk:Yb; anomalous dispersion; bandpass filtering; cascaded long-period fiber grating; energy 0.36 nJ; femtosecond fiber laser; frequency 125.39 MHz; mode-locking mechanism; nonlinear polarization; passive harmonic fiber laser; pulse shaping; time 2.5 ps; time 310 fs; Fiber lasers; Laser mode locking; Optical fiber communication; Optical fiber dispersion; Optical fiber polarization; Power harmonic filters; Quantum cascade lasers; Fiber lasers; fiber-optics amplifiers and oscillators; long-period fiber grating; mode-locked laser; ultrafast laser;
fLanguage :
English
Journal_Title :
Photonics Technology Letters, IEEE
Publisher :
ieee
ISSN :
1041-1135
Type :
jour
DOI :
10.1109/LPT.2010.2076276
Filename :
5570904
Link To Document :
