Fiber combining multiple pump sources for fiber lasers has enabled the thermal and reliability advantages of distributed architectures. Recently, mini-bar based modules have been demonstrated which combine the advantages of independent emitter failures previously shown in single-stripe pumps with improved brightness retention yielding over 2 MW/cm²Sr in compact economic modules. In this work multiple fiber-coupled mini-bars are fiber combined to yield an output of over 400 W with a brightness exceeding 1 MW/cm²Sr in an economic, low loss architecture.

Date Published: 23 February 2009
PDF: 5 pages
Proc. SPIE 7198, High-Power Diode Laser Technology and Applications VII, 71980V (23 February 2009); doi: 10.1117/12.809876

Published in SPIE Proceedings Vol. 7198:
High-Power Diode Laser Technology and Applications VII
Mark S. Zediker, Editor(s)