Fig. 1. Experimental setup of the fiber-solid hybrid amplification laser

Fig. 2. Sketch of the combined laser amplifier based on spherical aberration compensation theory

Fig. 3. Beam quality and far-field beam profile of the output from each amplifier with single-passing and double-passing configuration. (a) 1st amplifier stage with single-passing configuration; (b) 1st amplifier stage with double-passing configuration; (c) 2nd amplifier stage with single-passing configuration; (d) 2nd amplifier stage with double-passing configuration

Fig. 4. Output power as a function of pump power with different seed diameters in side-pumped Nd∶YAG amplifier

Fig. 5. Output characteristics with different pulse repetition rates of the seed. (a) Output power from the 1st and 2nd double-passing amplifier stage with different pulse repetition rates of the seed; (b) gain of the fiber-solid hybrid amplification laser with different pulse repetition rates of the seed

Fig. 6. (a) Pulse width and (b) spectral linewidth of the final output