Modal instability induced by stimulated Raman scattering in high-power Yb-doped fiber amplifiers

K Hejaz, M Shayganmanesh, R Rezaei-Nasirabad… - Optics letters, 2017 - opg.optica.org
Modal instability (MI) and stimulated Raman scattering (SRS) are the main obstacles in the
power scaling of fiber lasers and amplifiers. In the power scaling of a high-power ytterbium …

Optimization and demonstration of 6 kW oscillating-amplifying integrated fiber laser employing spindle-shaped fiber to suppress SRS and TMI

L Zeng, H Yang, X Xi, Y Ye, L Huang, B Yang… - Optics & Laser …, 2023 - Elsevier
Oscillating-amplifying integrated fiber laser is a novel configuration with both advantages of
fiber laser amplifiers and oscillators. In this work, a specially designed spindle-shaped fiber …

Transverse mode instability threshold enhancement in Yb-doped fiber lasers by cavity modification

K Hejaz, M Shayganmanesh, A Roohforouz… - Applied …, 2018 - opg.optica.org
To enhance the transverse mode instability (TMI) threshold of a fiber oscillator, a novel
configuration is presented. In this configuration the oscillator cavity length is considerably …

Tapered-fiber-enabled high-power, high-spectral-purity random fiber lasing

H Zhang, J Ye, P Zhou, X Wang, J Leng, J Xu, J Wu… - Optics letters, 2018 - opg.optica.org
Random distributed feedback Raman fiber laser is a new kind of light source that can be
applied to generate a high-power laser. In this Letter, we report on a high-power, high …

3 kW forward-pumped fiber laser via pump recycler

W Lin, MH Bussières-Hersir, M Auger, A Vincelette… - Applied Optics, 2023 - opg.optica.org
We report a single-end forward-pumped fiber laser with a record high output power of 3 kW.
The laser is assembled exclusively from commercially widespread components such as the …

Transverse mode instability of fiber oscillators in comparison with fiber amplifiers

K Hejaz, M Shayganmanesh, S Azizi… - Laser Physics …, 2018 - iopscience.iop.org
Transverse mode instability (TMI) is experimentally investigated in a fiber oscillator and a
fiber amplifier. For a reasonable comparison of TMI in these two configurations, the same …

Spectral broadening suppressed by a gain-enhanced fiber in polarization maintaining high-power systems

S Liao, T Luo, R Xiao, Y Chu, H Li, Y Xing… - IEEE Photonics …, 2022 - ieeexplore.ieee.org
A gain-enhanced 10/125 μm polarization-maintaining Yb-doped fiber (PMYDF), with the
cladding absorption of 7.5 dB/m at 976 nm, for narrow linewidth linearly polarized fiber …

Spectral dynamics of actively Q-switched erbium-doped fiber lasers

JA Minguela-Gallardo, YO Barmenkov… - IEEE Photonics …, 2017 - ieeexplore.ieee.org
We report the spectral dynamics of actively Q-switched erbium-doped fiber lasers
implemented in two common laser configurations: linear Fabry-Pérot cavity with a pair of …

Novel components and strategies to reduce nonlinear impairments of high power fiber lasers

W Lin - 2023 - escholarship.mcgill.ca
High-power fiber lasers (HPFL) based on ytterbium-doped double-cladding fibers have
been rapidly developed into the kilowatts (kW) regime in the past two decades. Thanks to …

SPECTRAL AND TEMPORAL DYNAMICS IN ACTIVELY Q-SWITCHED ERBIUM-DOPED FIBER LASERS

J Minguela - 2017 - cio.repositorioinstitucional.mx
" In the present dissertation work, the spectral and temporal features of actively Q-switched
erbium-doped fiber lasers are reported. These features were investigated for two common …