All-fiber master oscillator power amplifier structured single-frequency fiber laser

An all-fiber master oscillator power amplifier(MOPA) structured single-frequency fiber laser is demonstrated. The seed laser is a self-designed ring cavity structure which outputs a single-frequency laser beam. The 10 MHz linewidth, 1 079.88 nm MOPA laser has a output power of 10.02 W, when pumped by a diode laser at 976 nm. The signal-to-noise is about 30 dB, the slope efficiency is 65.3% and the optical-optical conversion efficiency is 58.9%.