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← ScienceWhich outcome limits data density on optical disks?
A)Diffraction-limited focused spot size✓
B)Material thermal expansion coefficient
C)Laser induced breakdown threshold
D)Reflected beam phase front distortion
💡 Explanation
The diffraction-limited focused spot size limits minimum feature size set via Rayleigh Criterion, because resolution scales inversely to aperture and wavelength. Therefore, higher data density is unattainable rather than laser breakdown or thermal expansion, representing limitations at high power or temperature.
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