Transverse mode instability in fiber laser oscillators
Abstract
What we believe to be a first theoretical study of transverse mode instability (TMI) in oscillators based on a stimulated thermal Rayleigh scattering (STRS) model is conducted. Higher order mode (HOM) lasing is found to happen at high powers. Further fundamental mode (FM) growth is limited once HOM lasing takes place, with further increase of pump power mostly going to HOM growth, a fundamentally different phenomenon from that in fiber amplifiers. TMI thresholds defined as when the HOM lasing condition is met is studied. The results are consistent with the measured TMI thresholds and their dependence on pumping configurations and pump wavelengths.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 12, 2023
- Source ID
- 10.1364/oe.495921
Entities
People
- Liang Dong
- Michalis N Zervas
Organizations
- Army Research Office
- Clemson University
- University of Southampton