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An Er/Yb co-doped double cladding fiber laser pumped at 980 nm was optimized. The double-cladding fiber laser with
whole fiber was obtained by end-pumping and utilizing fiber bragg grating as a resonator. The output power of laser was
analyzed along the changes of output grating reflectance (L=10m) as well as the fiber length (R2=4%). Consequently, a
fiber with 4 m Er / Yb co-doped double cladding was employed as gain medium while a fiber of which the reflectance
was approximately 15% was used as output resonator mirror. Thereafter the technical indexes of EYDF(Er / Yb Double
cladding Fiber) were measured. The absorption maximum of fiber core Er3+ was higher than 30dB/m and material gain
maximum was observed at 1535nm. Moreover, the diameters of fiber core and inner cladding of double-cladding fiber
grating were 6μm and 125μm respectively however the diameters of fiber core and inner cladding of Er/Yb co-doped
double cladding fiber were 7μm and 130μm separately.According to the experimental data, a fiber laser with 4 m Er / Yb
co-doped double cladding and launched maximum pump power of 3.4 W was set up. Proposed laser shows the
maximum output power of 1.25 W and slope efficiency of 40%.
Zhou Qu andMingliang Yan
"Study on the characteristics of an Er/Yb co-doped double cladding fiber laser", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73820T (28 August 2009); https://doi.org/10.1117/12.834998
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Zhou Qu, Mingliang Yan, "Study on the characteristics of an Er/Yb co-doped double cladding fiber laser," Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73820T (28 August 2009); https://doi.org/10.1117/12.834998