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← ScienceWhich risk increases with increasing laser power density?
A)Optical breakdown in treated materials✓
B)Increased stimulated emission efficiency
C)Improved harmonic generation fidelity
D)Reduced diffraction limited spot size
💡 Explanation
Optical breakdown occurs when the electric field of the laser becomes strong enough to ionize atoms via avalanche ionization, creating a plasma; therefore, localized damage occurs, rather than creating controlled material modifications that occur at lower power preventing the former from happening.
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