High power fiber lasers have become an area of active interest for several industrial, medical and strategic applications. The key component of a high power fiber laser module operating at around 1 μm is Ytterbium (Yb) doped optical fiber of large mode area (LMA) structure with high RE concentration and uniform dopant distribution . In this context, vapor phase technique based on high temperature sublimation of RE chelate compounds has shown high potential compared to conventional solution doping method. Recently, high success has been reported in producing good quality fibers employing this technique . In this paper, the performance of Yb–doped fibers fabricated through vapor phase doping technique is reported.
© 2014 Japan Society of Applied Physics, Optical Society of AmericaPDF Article