Fig. 1. Schematic diagram of laser Doppler effect

Fig. 2. Optical fiber end-face coated probe

Fig. 3. Laser interferometric velocimetry system

Fig. 4. Design diagram of experimental sample

Fig. 5. Pressurized fixing device and experimental sample

Fig. 6. Diagram of velocity measurement system in explosion experiment

Fig. 7. Test site of explosion experiment

Fig. 8. Original signals of oscilloscope

Fig. 9. Time-frequency spectrum of fiber probe after signal processing

Fig. 10. End-surface instantaneous velocity curves obtained with probes 2 and 4

Fig. 11. Comparison of particle velocity obtained by optical fiber and electromagnetic methods