China-made high power fiber amplifier in all-fiber configuration

An all-fiber-configuration master oscillator power amplification(MOPA)-structured high power laser has been constructed all with China-made components. A maximum output of 52.5 W centered at 1 080 nm is achieved at the launched pump power of 75 W. The optical to optical conversion efficiency is 70%. The experimental results have demonstrated the potential to achieve higher output power with more powerful pump source.