Improving coupling efficiency of optical fiber for high-power laser beam - Details

Author：

Wang, Baohua (Wang, Baohua.) | Jiang, Menghua (Jiang, Menghua.) | Hui, Yongling (Hui, Yongling.) | Li, Qiang (Li, Qiang.) (Scholars：李强)

Indexed by：

EI Scopus PKU CSCD

Abstract：

Beam　quality　parameter　plays　an　important　role　in　the　optical　fiber　coupling　for　the　high-power　laser.　For　high-power　laser,　its　laser　beam　is　always　multimode,　so　it　is　an　effective　method　to　use　equivalent　basic　mode　to　replace　multimode　for　calculating.　The　beam　width　of　this　equivalent　basic　mode　is　measured　by　including　98%　of　the　beam　energy,　and　this　is　an　effective　way　to　calculate　the　beam　quality　parameter.　A　high-efficiency　coupling　system　was　designed　by　using　theory　of　optical　fiber　coupling　for　the　high-power　laser　and　the　beam　transform,　and　in　the　system　numerical　values　of　lens　aperture　and　focus　were　optimized.　Experiment　proves　that　the　coupling　system　has　a　high　coupling　efficiency.　The　efficiency　is　more　than　94%　when　the　input　power　is　2000　W,　and　the　figure　of　the　experiment　on　coupling　efficiency　was　displayed　and　analyzed.

Keyword：

High power lasers Laser beams Calculations Optical fiber coupling Beam quality Solid state lasers

Author Community：

[ 1 ] [Wang, Baohua]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Jiang, Menghua]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Hui, Yongling]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Li, Qiang]Institute of Laser Engineering, Beijing University of Technology, Beijing 100022, China