Fig. 1. Diagram of model

Fig. 2. LSD with different diffuse-angles and optical tube with different heights

Fig. 3. Light intensity uniformity and coupling efficiency with different incident angles of laser

Fig. 4. Variation of coupling efficiency with angle of incident light of laser

Fig. 5. Simulation results of 3×3 receiver array. (a) Light intensity distribution in fore-end of laser receiver under Gaussian beam illumination; (b) Light intensity distribution on the photovoltaic cell under Gaussian beam illumination; (c) Light intensity distribution in fore-end of laser receiver under super Gaussian beam illumination; (d) Light intensity distribution on the photovoltaic cell under super Gaussian beam illumination

Fig. 6. Experimental schematic for LWPT

Fig. 7. Spot image taken by CCD. (a) Spot image in fore-end of laser receiver; (b) Spot image in back-end of laser receiver

Fig. 8. Influence of incident angle on system conversion efficiency

Table 1. Test values of different input optical power densities