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← ScienceWhich outcome occurs when a high-powered laser is focused on a transparent dielectric material, causing extremely localized heating?
A)Optical breakdown generates a plasma✓
B)Fluorescence increases proportionally to power
C)Refractive index becomes homogenous
D)Material becomes temporarily birefringent
💡 Explanation
Optical breakdown occurs because the intense electric field causes ionization, generating a plasma. This plasma absorbs more laser energy, leading to further ionization; therefore, optical breakdown results in a dense plasma, rather than graded fluorescence caused by lower intensities.
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