Resonance efficiency enhancement for cylindrical vector fiber laser with optically induced long period grating

We demonstrated an all fiber laser using a few mode distributed Bragg reflector with a cylindrical vector beam output. The resonance efficiency experiences a sudden change from 13.26% to 32.48% when the pump reaches a threshold-like power level. We attribute the origin of this phenomenon to the opti...

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Bibliographic Details
Published in:Applied physics letters 2017-04, Vol.110 (16)
Main Authors: Zhou, Y., Yan, K., Chen, R. S., Gu, C., Xu, L. X., Wang, A. T., Zhan, Q.
Format: Article
Language:English
Subjects:
Applied physics
Computer simulation
Doped fibers
Fiber lasers
Hole burning
Laser beams
Lasers
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Summary:We demonstrated an all fiber laser using a few mode distributed Bragg reflector with a cylindrical vector beam output. The resonance efficiency experiences a sudden change from 13.26% to 32.48% when the pump reaches a threshold-like power level. We attribute the origin of this phenomenon to the optically introduced long period grating caused by the transversal hole burning in the double clad Yb-doped fiber. This is confirmed by numerical simulations of the transversal hole burning influences on the laser operation. Four states of cylindrical vector beams with high modal symmetry are obtained through adjusting the laser polarization.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4980129