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← ScienceWhich coherence impact arises when the laser's beam path is obstructed?
A)Speckle pattern formation increases greatly✓
B)Increased mode-locking reduces pulse duration
C)Raman scattering efficiency becomes enhanced
D)Brewster angle transmission becomes optimized
💡 Explanation
The speckle occurs because random interference occurs from light scattering, which is a result of diffraction from obstructions in the beam; therefore interference increases, rather than mode-locking relating to pulsing, reducing loss, or scattering effects enhancing, because path interference changes.
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