Fig. 1. Schematic diagram of generating double-pulse. (a) Loss in resonator; (b) photon number density; (c) inversion particle number density; (d) pumping rate

Fig. 2. Q crystal high voltage switch block diagram

Fig. 3. Schematic diagram of Q crystal high voltage signal pulse

Fig. 4. Double-pulse laser. (a) Schematic diagram of experiment; (b) schematic diagram of lamp pump; (c) experimental setup

Fig. 5. Measurement results of traditional pulse Q-switched laser changing pump energy

Fig. 6. Waveforms at different pulse interval time. (a) 100 ns; (b) 400 ns; (c) 800 ns; (d) 1.5 μs; (e) 3 μs; (f) 10 μs

Fig. 7. Measured values of energy and pulse width of each pulse with pulse interval Δt of 100 ns‒10 μs

Fig. 8. Experimental results. (a) Double-pulse pulse width jitter test curve; (b) double-pulse energy test curve

Fig. 9. Pulse waveform, pulse energy, and pulse width of each pulse measured at different V₁ values

Fig. 10. Beam quality. (a) Single pulse; (b) double pulse