info:eu-repo/semantics/conferencePaper
CW 1.06-μm pumped Ytterbium-Holmium co-doped all-fiber laser for 2.05 μm
Autor
ALEXANDER KIRIYANOV
YURY BARMENKOV
Institución
Resumen
An Ytterbium-Holmium co-doped all-fiber CW laser is reported. The fiber used in the laser setup has been fabricated
through the conventional MCVD process in conjunction with the SD technique and finally drawn using a standard fiberdraw
tower. The laser was built in a linear Fabry-Perot configuration in which two fiber Bragg gratings reflecting at 2.05
μm were used as the cavity couplers. Under 1.06-μm in-core pumping of the fiber, CW lasing at 2.05 μm was provided
due to energy transfer Yb3+→Ho3+. The laser demonstrated low threshold (~0.8 W), moderate slope efficiency of lasing
(~8.4% when measured vs. pump power launched into the active fiber), and high stability: during 6 hours its output
power fluctuated within a 3% range. The laser spectrum width at a 3-dB level using an optical spectrum analyzer with a
37-pm resolution was measured to be ~70 pm.
Keywords: 2 microns, Ytterbium-Holmium co-doped silica fiber, Fabry-Perot cavity, CW operation