Fig. 1. The spatial structure of vortex beams ^［11］

Fig. 2. The spatial structure of vector beams ^［18］

Fig. 3. Experimental observation of the effect of optical OAM in photoionization

Fig. 4. Detection and control of optical orbital-to-spin conversion^［43］

Fig. 5. Simulation of the intensity， SAM， and OAM of the light field in the focal plane^［43］

Fig. 6. Progress of OAM-HHG^{［41，49，50，55，57］}

Fig. 7. Progress of HHG driven by vector beams^［58-60］