Figure 3 | Burst of spatiotemporal vortex pulses with time-varying chirality alternating. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure 3 | Burst of spatiotemporal vortex pulses with time-varying chirality alternating.

Caption

Figure 3 | Burst of spatiotemporal vortex pulses with time-varying chirality alternating. a, and b, Measured iso-intensity and phase profile with a 2.8 ps temporal pitch. The red and blue color denotes the negative and positive topological charge respectively. c, Complex field and energy density flux (calculated with anomalous dispersion) of pulse burst in the space-time domain, forming a vortex diploe or spin current, reminiscent of the Kármán vortex street featured temporal variation of chirality of transverse OAM. The values at the top denote the average value of transverse OAM per photon for each comb teeth. The saturation and hue denote amplitude and phase information respectively.

Credit

Qiwen Zhan et al.

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