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← ScienceWhich consequence results when a pulsed laser encounters atmospheric turbulence?
A)Beam divergence increases significantly✓
B)Temporal coherence is greatly enhanced
C)Wavelength exhibits a blueshift
D)Pulse duration becomes shorter
💡 Explanation
Increased beam divergence happens because atmospheric turbulence induces spatially varying refractive index changes, causing *scintillation*, therefore the beam spreads more than a diffraction-limited beam rather than other changes; enhanced coherence requires stable optical cavities.
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