Fig. 1. Laser communication process and optical field transformation diagram

Fig. 2. Capture deviation at receiver

Fig. 3. Centroid intensity variations of received spots caused by single aberration. (a) Aberration at transmitter end; (b) aberration at receiver end

Fig. 4. Effects of interactions between different aberrations on light intensity at receiver end. (a) Coma and astigmatism; (b) coma and defocus; (c) coma and spherical aberration; (d) tilt and astigmatism; (e) tilt and defocus; (f) tilt and spherical aberration; (g) astigmatism and spherical aberration; (h) astigmatism and defocus; (i) defocus and spherical aberration; (j) tilt and coma

Fig. 5. Relationship between different wavefront error tolerances and cross-coupling aberration coefficients. (a) Tilt and coma;

Fig. 6. Curves of centroid intensity variations in receiving focal plane due to different total wavefront aberrations at receiver

Fig. 7. Ratio corresponding to minimum deviation captured by receiver changing with aberration tolerance

Fig. 8. Variation curves of centroid light intensity on receiving focal plane caused by different total wavefront errors at transmitter.

Fig. 9. Aberration ratios corresponding to peak light intensity under different receiving aperture ratios. (a) Tilt and coma; (b) defocus and spherical aberration

Fig. 10. Centroid light intensity variation curves under combined effect of different amounts of defocus and spherical aberrations at receiver end

Fig. 11. Aberration ratios corresponding to peak light intensities at different receiving focal lengths