Analysis of fiber coupled laser diode's beam quality with bending fiber approach - Details

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EI PKU CSCD

Abstract：

In　order　to　get　the　characteristics　of　optical　field　in　the　pigtail　fiber　of　fiber　coupled　laser　diode　and　increase　the　pump　efficiency　of　fiber　laser,　propagation　ray　calculation　and　experiments　of　transmission　efficiency　in　bending　pigtail　fiber　are　presented.　In　bending　fiber　experiments,　it　is　found　that　more　than　15%　of　output　power　differences　are　given　by　fiber　coupled　laser　diode　with　the　same　nominal　output　power　and　pigtail　fiber.　It　means　optic　modes　need　to　be　chosen　so　as　to　maintain　the　pumping　efficiency　and　stability　in　pumping　application.　Based　on　the　analysis　of　propagation　ray　theory,　a　new　approach　to　judge　the　beam　quality　of　fiber　coupled　laser　diode　by　bending　fiber　is　presented.　It　also　can　be　used　in　detecting　the　fiber　coupled　efficiency　of　laser　diode.

Keyword：

Semiconductor diodes Efficiency Pumping (laser) Quality control Lasers Semiconductor lasers Laser theory Fibers Fiber lasers

Author Community：

[ 1 ] [Yao, Shun]National Center of Laser Technology, Institute of Laser Technology, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Pang, Xiaolin]National Center of Laser Technology, Institute of Laser Technology, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Dai, Jingjing]National Center of Laser Technology, Institute of Laser Technology, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Liu, Xuesheng]National Center of Laser Technology, Institute of Laser Technology, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Cao, Yinhua]National Center of Laser Technology, Institute of Laser Technology, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Wang, Zhiyong]National Center of Laser Technology, Institute of Laser Technology, Beijing University of Technology, Beijing 100124, China