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Which risk increases when multiple free-space laser transceivers lack mutual path-length coherence?

A)Significant beam pattern distortions
B)Catastrophic mirror surface ablation
C)Increased Raman scattering losses
D)Reduced overall thermal lensing

💡 Explanation

Significant beam pattern distortions increase because the optical signals incoherently interfere, leading to unpredictable intensity variations via destructive interference; therefore, speckle patterns arise, rather than uniform illumination, hindering signal fidelity which relies on constructive interference.

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