Which problem emerges when a pulsed laser's coherence collapses in a metal-cutting process?

A)Kerf width increases dramatically✓

B)Heat-affected zone is negligibly reduced

C)Cutting speed shows no deviation

D)Material reflectivity decreases gradually

💡 Explanation

As the coherence is lost, the laser beam diverges due to diffraction, which is a form of wave interference. This reduces the power density at focus because the beam’s energy spreads across a larger area; therefore, the kerf widens, rather than a different cutting parameter being affected due to a small intensity adjustment.

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Which problem emerges when a pulsed laser's coherence collapses in a metal-cutting process?

💡 Explanation

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