Open AccessMode-locked Tm fiber laser using SMF-SIMF-GIMF-SMF fiber structure as a saturable absorber
Author(s) -
Huanhuan Li,
Zhaokun Wang,
Can Li,
Junjie Zhang,
Shiqing Xu
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.026546
Subject(s) - optics , materials science , fiber laser , saturable absorption , multi mode optical fiber , ultrashort pulse , mode locking , laser , single mode optical fiber , optoelectronics , optical fiber , physics
We demonstrate a mode-locked all-fiber Tm laser using a single mode-step index multimode-graded-index multimode-single mode fiber structure as a saturable absorber based on the nonlinear multimodal interference. Stable fundamentally mode-locking operation was obtained at a pump threshold of 180mW. The output soliton pulses had a center wavelength, spectral width, pulse duration, and repetition rate of 1888 nm, 3.6 nm, 1.4 ps, and19.82 MHz, respectively. This is a simple, low-cost, stable, and convenient laser oscillator with many potential applications in eye-safe ultrafast photonics.