Design of a dual-channel modelocked fiber laser that avoids multi-pulsing

Multi-channel modelocked lasers and their design have attracted much attention. Here, we use the Swift-Hohenberg equation to study dual-channel simultaneous modelocking (DSML) in a fiber laser. When a quartic filter is added to the laser cavity, the stable dual-channel simultaneous modelocking can b...

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Bibliographic Details
Published in:Optics express 2019-05, Vol.27 (10), p.14173-14183
Main Authors: Zhang, Xianting, Wang, Shaokang, Guo, Nan, Li, Feng, Menyuk, Curtis R, Wai, P K A
Format: Article
Language:English
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Summary:Multi-channel modelocked lasers and their design have attracted much attention. Here, we use the Swift-Hohenberg equation to study dual-channel simultaneous modelocking (DSML) in a fiber laser. When a quartic filter is added to the laser cavity, the stable dual-channel simultaneous modelocking can be obtained for a given filter bandwidth when frequency separation, ω , is less than a calculated threshold, ω . When ω >ω , a multipulsing instability occurs. We use a linear stability analysis to determine the limit that the multi-pulsing instability imposes on DSML, and we propose a cavity design that avoids the multi-pulsing instability.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.27.014173