Fig. 1. Schematic diagram of time-domain waveform of burst-mode fiber laser

Fig. 2. Schematic diagram of burst-mode fiber laser generated by combining high frequency pulse with active modulation

Fig. 3. Burst-mode fiber laser generated by mode-locked laser and AOM^[49]. (a) Experimental structure; (b) time-domain waveform of burst-mode

Fig. 4. Burst-mode fiber laser generated by electric gain switch combined with AOM modulation^[52]. (a) Experimental structure; (b) time-domain waveform of burst-mode after AOM pre-compensation; (c) amplified time-domain waveform of burst-mode

Fig. 5. Burst-mode fiber laser generated by EOM cascade modulation^[53]. (a) Experimental structure; (b) time-domain waveform of burst-mode after EOM pre-compensation; (c) time-domain waveform of amplified burst-mode

Fig. 6. Experimental structure of tunable all-fiber high energy burst-mode fiber laser system^[54]

Fig. 7. Tunable time-domain and spectrum of subpulse repetition frequency^[54]

Fig. 8. Experimental structure of all-fiber burst-mode fiber laser based on DSR mode-locking^[55]. (a) DSR mode-locked fiber laser as a seed; (b) modulation module and the three-stage YDF amplifier

Fig. 9. Output pulses of all-fiber burst-mode fiber laser based on DSR mode-locking^[55]. (a) Output pulse waveforms of mode-locked laser at different pumping powers,illustration is interference autocorrelation tracks over a span of 50 ps; (b) radio frequency spectrum in the 300 MHz range, illustration is radio frequency spectrum at fundamental frequency; (c) spectrum of DSR pulse; (d) variation in pulse duration and output power with pump power

Fig. 10. Time-domain waveforms of burst-mode fiber laser under different pulse widths and sub-pulse repetition frequencies^[55]. (a) Different sub-pulse repetition frequencies (0.8, 1.0, 1.5 GHz) at 10 ns pulse width; (b) different pulse widths (2, 5, 10 ns) at 1.5 GHz sub-pulse repetition frequency

Fig. 11. All-fiber burst-mode fiber laser with tunable high energy and peak power sub-pulse repetition frequency and envelope^[56]. (a) Schematic diagram of experimental structure; (b) timing of each amplifier

Fig. 12. Tuning spectra with sub-pulse repetition frequencies of 0.5‒10 GHz^[56]

Fig. 13. Output characteristics of burst-mode fiber laser^[56]. (a) Relationship between output energy and pump power; (b) time-domain waveforms at different output energies; (c) comparison of seed light and output sub-pulse; (d) spectra of seed and different output energies

Fig. 14. Burst-mode fiber laser generated by semiconductor directly drived by high-speed circuit^[57]. (a) Experimental structure; (b) waveform of burst-mode electrical signal; (c) time-domain waveform of burst-mode fiber laser

Fig. 15. Experimental structre and output waveform of ultra-long cavity mode-locked laser^[58]. (a) Schematic diagram of structure for ultra-long cavity lossless mode-locked burst-mode fiber laser; (b) time-domain waveform of burst-mode

Fig. 16. Q-switched mode-locking^[59]. (a) Structure of Q-switched mode-locked laser system output burst-mode fiber laser; (b) seed time- domain of burst-mode; (c) time-domain of burst-mode when burst-mode energy is 8.3 mJ after amplification

Fig. 17. Amplifier output characteristics at maximum burst-mode energy^[59]. (a) Seed spectra and spectra at maximum output energy; (b) spectra in the 900~1200 nm range; (c) internal time-domain of the cluster sub-pulse at seed and maximum output energy; (d) tested beam quality factor

Fig. 18. Schematic diagram of structure for burst-mode fiber laser generated by pulse stacking^[60]

Fig. 19. Schematic diagram of burst-mode fiber laser generated by active fiber loop^[61]

Fig. 20. Burst-mode fiber lasers with different numbers of sub-pulses under repetition frequency of 3.65 GHz^[61]. (a) 2; (b) 5; (c) 10; (d) 20

Fig. 21. Overall experimental structure of burst-mode fiber laser generated based on active fiber loop^[61]

Fig. 22. Overall experimental structure of burst-mode fiber laser generated by improved active fiber loop^[62]

Fig. 23. Comparison of machining effects between conventional pulsed laser and burst-mode fiber laser^[66]. (a) Machining effect of ultra-short pulse with frequency of 1 kHz and energy of 100 μJ; (b) machining effect of burst-mode fiber laser with sub-pulse repetition frequency of 1.7 GHz; after 25 times power increase, machining effects of (c) traditional pulse fiber laser and (d) burst-mode fiber laser

Fig. 24. Structure of the multi-pulse push scanning imaging LiDAR system^[72]

Fig. 25. Schematic diagram of the multi-species fiber-bundle-based 2D Raman and Rayleigh imaging system^[81]

Fig. 26. Structure of high power microwave generated by light irradiation for PCSS