Fig. 1. Schematic of laser eavesdropping

Fig. 2. Influence of z6 aberration on energy utilization. (a) Spot diagram, RMS of aberration is 0.1λ; (b) energy utilization distribution; RMS of aberration is 0.1λ; (c) spot diagram, RMS of aberration is 0.15λ; (d) energy utilization distribution; RMS of aberration is 0.15λ

Fig. 3. Influences of Zernike aberrations with different magnitudes and different types on energy utilization

Fig. 4. Influence of atmospheric turbulence on energy utilization. (a) D/r0=0; (b) D/r0=5

Fig. 5. Influences of atmospheric turbulences with different D/r0 on energy utilization