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← ScienceWhich outcome diminishes when multiple lasers lack coherence?
A)Speckle contrast reduces noticeably✓
B)Optical output flux remains high
C)Average power consumption increases slightly
D)Thermal lens divergence becomes stronger
💡 Explanation
Speckle relies on coherent light sources creating interference patterns; when incoherent because their phases vary randomly, they cannot form stable interference resulting in speckle. Consequently, speckle contrast reduces therefore choice A fits that outcome rather than a power boost.
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