Which risk increases when a pulsed laser with poor coherence illuminates a rough metal surface?

💡 Explanation

Reduced material ablation efficiency occurs because the interference patterns lead to uneven energy distribution; therefore, ablation is inconsistent rather than uniformly vaporizing material with ideal laser energy due to coherence.

• Which phenomenon limits etching resolution using deep-UV lasers?
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• Which outcome results when attempting to read a scratched, multilayer optical disc?
• Which distortion affects an infrared spectroscopy absorption signal generated by a gas sample at high concentration?