Noise-like femtosecond pulse in passively mode-locked Tm-doped NALM-based oscillator with small net anomalous dispersion

A passively mode-locked thulium-doped fiber laser (TDFL) based on a nonlinear amplifying loop mirror (NALM) is presented. By adjusting the polarization controllers, stable noise-like (NL) mode-locked femtosecond pulse operation is obtained at the 2 m band. In the experimental period of 200 min, the...

Full description

Saved in:
Bibliographic Details
Published in:Journal of optics (2010) 2016-01, Vol.18 (1), p.15508-15513
Main Authors: Liu, Shuo, Yan, Feng-Ping, Zhang, Lu-Na, Han, Wen-Guo, Bai, Zhuo-Ya, Zhou, Hong
Format: Article
Language:English
Subjects:
Dispersion
Femtosecond pulses
Fiber lasers
fiber nonlinear optics
Fluctuation
infrared lasers
Lasers
mode-locked lasers
Oscillators
Pumps
Spectra
ultrafast lasers
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A passively mode-locked thulium-doped fiber laser (TDFL) based on a nonlinear amplifying loop mirror (NALM) is presented. By adjusting the polarization controllers, stable noise-like (NL) mode-locked femtosecond pulse operation is obtained at the 2 m band. In the experimental period of 200 min, the output power fluctuation is less than 0.06 dB and the 3 dB spectral bandwidth variation is less than 0.02 nm, indicating that the pulsed TDFL possesses good long-term stability. To the best of our knowledge, this is the first 2 m band NALM-based TDFL with small net anomalous dispersion for a NL femtosecond pulse. At the maximum pump power of 3.52 W, the emitting laser has a NL pulse width of 460 fs, the repetition rate of 9.1 MHz, and the NL pulse energy of 32.72 nJ.
ISSN:2040-8978
2040-8986
DOI:10.1088/2040-8978/18/1/015508