Abstract
Stimulated Raman scattering (SRS) fiber lasers remain an area of interest as they provide a simple and compact method of creating lasers at wavelengths beyond the rare-earth ion bands. The authors and others have demonstrated that short π-phase shifted distributed-feedback (DFB) cavity structures can be used to create single-frequency lasers [4]. This produced a laser with a threshold of 4 W with a maximum output of 700 mW for 8 W of pump with the expected 607 MHz beat frequency between the few longitudinal modesm and 20 dB side mode suppression.
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