[摘要]：We frequency stabilize a fiber laser for use in low-frequency sensing applications. Using a radio frequency locking technique, an Erbium-doped single longitudinal mode fiber laser is stabilized to a Mach-Zehnder interferometer. The low-frequency fiber laser noise was suppressed by more than 1.5 orders of magnitude at frequencies below 300 Hz reaching a minimum of 2 Hz/root Hz between 60 and 250 Hz. The corresponding strain sensitivities are 2 p epsilon/root Hz at 1 Hz and 15 f epsilon/root Hz from 60 to 250 Hz.
