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← ScienceWhich consequence results when coherence is lost in laser micromachining?
A)Reduced focus spot precision✓
B)Wavelength shift to infrared
C)Increased energy consumption overhead
D)Material crystallization accelerates rapidly
💡 Explanation
Laser coherence delivers precise focus; its loss blurs the machining area because diffraction increases spot size during ablation due to mismatched phases. Therefore the focal spot loses precision, rather than other effects that arise from power or wavelength changes.
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