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← ScienceWhich outcome results when using a short coherence length pulsed laser?
A)Reduced speckle noise in imaging✓
B)Increased material ablation precision
C)Improved fringe visibility holography
D)Enhanced stimulated Raman gain
💡 Explanation
Reduced speckle occurs because short coherence length lasers produce numerous independent interference patterns, thereby averaging out the speckle. Therefore speckle is reduced, rather than enhanced, since long coherence lasers produce highly defined speckle.
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