All-fiber cascaded ytterbium-doped nanosecond pulsed amplifier

【摘要】 <正>A cascaded ytterbium-doped all-fiber master oscillator power amplifier(MOPA) with 1064-nm pulsed laser is demonstrated,and it can produce up to 20-W average power and 0.1-mJ pulse energy at tunable repetition rates from 10 to 200 kHz.Two main difficulties of the all-fiber configuration are overcome:all fiber isolator and mode field adapter between single mode fiber(SMF) and double cladding fiber(DCF). Gain saturation and nonlinear effect are analyzed theoretically,and the possibility of further power-scaling of this cascade scheme is predicted.更多还原

【Abstract】 A cascaded ytterbium-doped all-fiber master oscillator power amplifier(MOPA) with 1064-nm pulsed laser is demonstrated,and it can produce up to 20-W average power and 0.1-mJ pulse energy at tunable repetition rates from 10 to 200 kHz.Two main difficulties of the all-fiber configuration are overcome:all fiber isolator and mode field adapter between single mode fiber(SMF) and double cladding fiber(DCF). Gain saturation and nonlinear effect are analyzed theoretically,and the possibility of further power-scaling of this cascade scheme is predicted.更多还原