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Appl. Sci. 2015, 5(4), 1323-1336; doi:10.3390/app5041323

High-Power Continuous-Wave Directly-Diode-Pumped Fiber Raman Lasers

Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK
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Author to whom correspondence should be addressed.
Academic Editor: Totaro Imasaka
Received: 24 September 2015 / Accepted: 13 November 2015 / Published: 20 November 2015
(This article belongs to the Special Issue Fibre Lasers: From Underlying Science and Technology to Applications)
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Abstract

We describe novel fiber Raman lasers pumped directly by spectrally combined high power multimode laser diodes at ~975 nm and emitting at ~1019 nm. With a commercial multimode graded-index fiber, we reached 20 W of laser output power with a record slope efficiency of 80%. With an in-house double-clad fiber, the beam quality improved to M2 = 1.9, albeit with lower output power and slope efficiency due to higher fiber loss. We believe this is the first publication of a fiber Raman laser cladding-pumped directly by diodes. View Full-Text
Keywords: nonlinear fibre optics; fiber lasers; Raman lasers nonlinear fibre optics; fiber lasers; Raman lasers
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yao, T.; Harish, A.V.; Sahu, J.K.; Nilsson, J. High-Power Continuous-Wave Directly-Diode-Pumped Fiber Raman Lasers. Appl. Sci. 2015, 5, 1323-1336.

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