Answers are grounded in this paper and cite their sources.
A novel erbium-doped fibre laser cavity configuration which produces single-longitudinal-mode operation with less than 10 kHz linewidth is reported. The fibre laser operates in a travelling-wave mode which prevents spatial holeburning from occurring. A principal advantage of the configuration is that it allows the precise and stable setting of the lasing wavelength.
No takes yet. Share an insight, caveat, or question.
Cowle et al. (1991) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: