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Which behavior results when a laser passes through vapor?

A)Speckle pattern degrades image resolution
B)Increased thermal lensing occurs in amplifier
C)Nonlinear crystal generates harmonics only
D)Gain medium becomes saturated uniformly

💡 Explanation

Laser light scattering from many fine particles generates a speckle pattern because constructive and destructive wave interference varies randomly. Therefore, speckle degrades perceived image quality rather than harmonic generation or thermal lensing under these conditions.

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