A widely tunable single-longitudinal-mode ytterbium-doped fiber laser based on fiber Lyot filter

摘要

A widely tunable single-longitudinal-mode (SLM) ytterbium-doped fiber laser is experimentally demonstrated, which is achieved by combining a fiber Lyot filter and a saturable absorber in a ring cavity. Stable SLM operation from 1045 nm to 1076 nm is obtained by properly adjusting the polarization state. The output power reaches 7.5 dBm with a fluctuation of less than 2 dB. The optical signal-to-noise ratio is 42.5 dB with a fluctuation of less than 6 dB in this wavelength range.