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Theoretical analysis of nth-order cascaded continuous-wave Raman fiber lasers. II. Optimization and design rules

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Abstract

Using the analytical model we developed for an nth-order cascaded Raman laser, we find the design rules for such lasers. We determine analytical expressions for the cavity length and the output-coupler reflectivity that maximize the output power and minimize threshold power. Simple expressions are obtained in the depleted-pump approximation. Deviations from these expressions when the pump is not completely depleted are shown to be different depending on the parity of the number n of Stokes shifts (cascades). The design rules show that the mirror reflectivity is a critical factor in the laser quality and that the ultimate slope efficiency η is found to be gn/g0. We also find a condition to determine if P-doped fibers are more useful than Ge-doped fibers in Raman fiber lasers based only on the Raman shift and absorption of the fibers.

© 2005 Optical Society of America

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Theoretical analysis of nth-order cascaded continuous-wave Raman fiber lasers. I. Model and resolution

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Reply to comment on "Theoretical analysis of nth-order cascaded continuous-wave Raman fiber lasers. II. Optimization and design rules"

Bryan Burgoyne, Nicolas Godbout, and Suzanne Lacroix
J. Opt. Soc. Am. B 24(1) 30-30 (2007)

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