Open AccessAll-normal-dispersion nonlinear polarization rotation mode-locked Tm:ZBLAN fiber laser
Author(s) -
Masaki Tokurakawa,
Hiromu Sagara,
Henrik Tünnermann
Publication year - 2019
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.27.019530
Subject(s) - zblan , optics , materials science , fiber laser , mode locking , laser , wavelength , pulse duration , dispersion shifted fiber , dispersion (optics) , optical fiber , optoelectronics , physics , fiber optic sensor
We demonstrated an all-normal-dispersion nonlinear polarization rotation mode-locked Tm:ZBLAN fiber laser in the 2 μm wavelength band. All fibers in the experiment were ZBLAN fibers with normal dispersion in the wavelength band. An average power of 63 mW with a characteristic cat-ear shaped optical spectrum of an ANDi laser was obtained. The center wavelength and the spectral bandwidth were 1880 nm and ~80 nm, respectively. The repetition rate was 70.6 MHz and the corresponding pulse energy was 0.9 nJ. The pulse duration directly from the oscillator was 860 fs and it was compressed to 107 fs.