Extension of RF-resolved RIN design rules beyond the studied regime

Verify whether the RF-resolved relative-intensity-noise design rules established for multi-longitudinal-mode continuous-wave ytterbium fiber lasers with approximately 2 nm bandwidth remain valid at substantially different output powers, with different gain fibers, or with different seed linewidths.

Background

The paper establishes design rules for a specific experimental regime: multi-longitudinal-mode continuous-wave Yb-doped fiber lasers with approximately 2 nm optical bandwidth, the investigated power range, the tested gain fiber, and the seed architectures studied. The authors explicitly limit the scope of their conclusions to this regime.

Whether the observed dependence of low-, mid-, and high-frequency RIN on seed topology, seed power, pumping geometry, and cavity FSR extends to substantially different powers, gain fibers, or seed linewidths is not resolved by the reported experiments and requires further verification.

References

These rules are established within the multi-longitudinal-mode, $\sim$2~nm-bandwidth CW regime and the power range studied here, and their extension to substantially different powers, gain fibers, or seed linewidths remains to be verified.

— RF-Resolved RIN Engineering of High-Power CW Yb Fiber Laser Architectures Using Seed Topology, Seed Power, Pumping Geometry and Cavity FSR  (2610.11856 - Augustine et al., 8 Oct 2026) in Section IV, “Summary and Conclusions”