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← ScienceWhich mechanism limits power scaling when focusing powerful lasers?
A)Self-focusing causes catastrophic filamentation✓
B)Brewster angle induces total reflection
C)Gain saturation halts amplification process
D)Thermal lensing disrupts beam collimation
💡 Explanation
Self-focusing limits laser power due to the Kerr effect, causing increased refractive index with intensity; this mechanism results in catastrophic filamentation because the beam collapses rather than staying focused; therefore higher power scaling becomes impossible.
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