Details

Autor(en) / Beteiligte

• Filippov, V
• Chamorovskii, Y
• Kerttula, J
• Kholodkov, A
• Okhotnikov, O G

Titel

600 W power scalable single transverse mode tapered double-clad fiber laser

Ist Teil von

• Optics express, 2009-02, Vol.17 (3), p.1203-1214

Ort / Verlag

United States

Erscheinungsjahr

2009

Link zum Volltext

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• Pump propagation and absorption in active tapered double-clad fiber has been analyzed based on a ray optics approach. Optimization of the longitudinal shape, absorption and angular distribution of the pump beam allowed for power scaling of a ytterbium fiber laser up to 600 W with high beam quality (M2<or=1.08) and a slope efficiency of 63%. It is shown that the influence of vignetting in a tapered fiber can be avoided, resulting in high overall efficiency, in good agreement with the presented model.