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← ScienceWhich physical effect diminishes fringes when imaging through turbulence with a laser?
A)Atmospheric refractive index fluctuations✓
B)Decreased laser mode coherence
C)Increased signal to photon ratio
D)Target induced laser self-focusing
💡 Explanation
Turbulence causes wavefront distortion because it induces random fluctuations in refractive index along the path, and wavefront distortion causes scintillation; therefore fringe contrast suffers, rather than coherence changes or nonlinear focusing inducing those aberrations.
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