Fig. 1. Spontaneous emission light model of thin disk

Fig. 2. Yb∶YAG energy level diagram and corresponding spectral lines

Fig. 3. Schematic of iterative solution of rate equation

Fig. 4. Theoretical calculation results. (a) Variation of population in upper energy level with time; (b) variation of number of photons with time; (c) output pulse waveform

Fig. 5. Experimental setup of cavity-dumped thin disk laser

Fig. 6. Output power characteristics for different pump powers and different gate time (numbers in figure are pump powers)

Fig. 7. Output waveforms under 253 W output power. (a) Single pulse waveform; (b) output pulse waveform of multiple cycles; (c) spectrum of output laser

Fig. 8. Period doubling output waveform under longer Pockels cell gate time

Fig. 9. Output pulse energy bifurcation diagrams when pump power is set to 521 W. (a) Theoretical simulation result; (b) experimental measurement result

Fig. 10. Multi-pulse trigger waveforms under different gate time when pump power is set to 521 W

Fig. 11. Measured beam quality