Fig. 1. Schematic diagram of ultrafast imaging based on polarization encoding

Fig. 2. Structural diagram of ultrafast imaging system based on polarization encoding. (a) Light path of system; (b) delay unit;(c) distribution of half wave plate array; (d) distribution of step array

Fig. 3. Diagram of simulation experiment. (a) Lens array; (b) dynamic event; (c) array of simulation coefficient images

Fig. 4. Results of simulation experiment. （a） Intensity distribution obtained by D₁ detector； （b） intensity distribution obtained by D₂ detector； （c） intensity distribution obtained by D₃ detector； （d） restored image of dynamic event at t₁； （e） restored image of dynamic event at t₂； （f） restored image of dynamic event at t₃

Fig. 5. Verification experiment of polarization encoding. (a) Experimental light path; (b) coefficient array; (c1)-(c3) superimposed images; (d1)-(d3) original images; (e1)-(e3) restored images

Fig. 6. Sequential pulse simulation experiment. (a) Schematic diagram of simulation structure; (b) distribution of sequential pulses in timeline; (c) envelopes of normalized sequential pulses

Fig. 7. Implementation scheme for high-order coefficient matrix. (a) Fourth-order coefficient matrix; (b) sixth-order coefficient matrix

Fig. 8. Optical resolution test board images obtained by different ways. (a)-(c) Optical resolution test board images obtained by detector 1; (d)-(f) optical resolution test board images obtained by eliminating background and increasing contrast; (g)-(i) restored optical resolution test board images

Fig. 9. Results of ultrafast imaging method based on polarization encoding with integrated detector. (a) Distribution of polarizer array on surface of detector; (b) image obtained by detector; (c1)-(c3) priori images obtained by detector; (d1)-(d3) recovery results obtained by integrated detection simulation

Fig. 10. Influence of ultrafast imaging method based on polarization encoding with integrated detector on spatial resolution. (a1)-(a3) Original images; (b1)-(b3) recovery images; (c1)-(c3) recovery images based on interpolation method; (d1)-(d3) recovery images obtained by imaging processing