Second Harmonic Generation Using an All-Fiber Q-Switched Yb-Doped Fiber Laser and MgO : c-PPLN

الملخص EN

We have experimentally demonstrated an efficient all-fiber passively Q-switched Yb-doped fiber laser with Samarium doped fiber as a saturable absorber.

Average output power of 3.4 W at a repetition rate of 250 kHz and a pulse width of 1.1 microseconds was obtained at a pump power of 9.0 W.

By using this fiber laser system and an MgO-doped congruent periodically poled lithium niobate (MgO:c-PPLN), second harmonic generation (SHG) output at 532 nm was achieved at room temperature.

The conversion efficiency is around 4.2% which agrees well with the theoretical simulation.