Ytterbium-Doped Silica Microsphere Laser

Abstract

An experimental of the laser emission in a set of Ytterbium-doped silica microsphere resonator (YMCs) with various concentrations of Yb3+ ions at continuous-wave 980-nm pumping is reported. The Yb-doped silica microsphere is fabricated with single optical tapered fiber, which dipped ytterbium nitrate solution, heating of electrodes discharged.The tapered optical fiber is fabricated by using a hydrogen flame heating and step motor pulling system. The microcavity is pumped with 976 nm continue laser by a tapered optical fiber coupled to the cavity . A multimode laser emission spectrum is observed with the spectral range of laser is 1070–1185nm.