79.4 W single-transverse-mode output of large-mode-area fiber laser

li li-bo; lou qi-hong; zhou jun; dong jing-xing; wei yun-rong; li jin-yan

Volume 19 Issue 07

Mar. 2012

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Article Navigation > High Power Laser and Particle Beams > 2007 > 19(07): 0-

li li-bo, lou qi-hong, zhou jun, et al. 79.4 W single-transverse-mode output of large-mode-area fiber laser[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

li li-bo, lou qi-hong, zhou jun, et al. 79.4 W single-transverse-mode output of large-mode-area fiber laser[J]. High Power Laser and Particle Beams, 2007, 19.

li li-bo, lou qi-hong, zhou jun, et al. 79.4 W single-transverse-mode output of large-mode-area fiber laser[J]. High Power Laser and Particle Beams, 2007, 19.

Citation:

li li-bo, lou qi-hong, zhou jun, et al. 79.4 W single-transverse-mode output of large-mode-area fiber laser[J]. High Power Laser and Particle Beams, 2007, 19.

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79.4 W single-transverse-mode output of large-mode-area fiber laser

1.
Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,P.O.Box 800-211,Shanghai 201800,China;
2.
Graduate University of Chinese Academy of Sciences,Beijing 100039,China;
3.
FiberHome Telecommunication Tech Co Ltd,Wuhan 430079,China

Publish Date: 2007-07-15

Abstract

Abstract

A homemade large-mode-area(LMA) multimode fiber before and after coiling was studied contrastively in the experiment. Single-transverse-mode output was achieved when the fiber laser was coiled around a mandrel of 65 mm radius. After coiling, beam quality factor of the laser droped from 1.24 to 1.06 and slope efficiency droped from 64.7% to 54.3%. When the launched pump power was 149 W, the corresponding output power was 94.7 W and 79.4 W, respectively. However, the brightness of the coiled fiber laser was 1.15 times that of the uncoiled. Coiled modal losses of different modes were also calculated for the fiber employed in the experiment. The measured results agree well with the calculated ones.
- fiber laser,
- single-transverse-mode output,
- coiled loss,
- lma multimode fiber

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