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

Applied Sciences

Tianfu Yao²  Achar V. Harish¹  Jayanta K. Sahu²  Johan Nilsson² 

[1]Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, UK

关键词: nonlinear fibre optics;    fiber lasers;    Raman lasers;   

DOI  :  10.3390/app5041323

来源: mdpi

【 摘 要 】

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= 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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.