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

Table 1

Parameters of Yb-Sm Q-switched fiber laser.

	Sm-absorber length
	0.6 m	0.45 m
Repetition rate, kHz	278	250
Pulse width,𝜇s	0.80	1.1
Pulse energy, 𝜇J	10.1	13.6
Maximum average power, W	2.8	3.4
Slope efficiency, %	41	47