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← ScienceWhich optical effect decreases in a laser cavity from mirror misalignment?
A)Spatial coherence diminishes✓
B)Refractive index increases
C)Temporal pulse broadens
D)Quantum efficiency peaks
💡 Explanation
Misaligned mirrors cause photons to take varied paths, and therefore laser gain decreases; Spatial coherence diminishes, because consistent phase relationships are disrupted rather than altered refractive index or quantum efficiency which depend on the material directly.
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