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← ScienceWhich precision decrease results when exceeding laser's coherence length?
A)Reduced spectral linewidth is observed
B)Increased pointing instability occurs
C)Fringe visibility diminishes rapidly✓
D)Stimulated emission becomes less dominant
💡 Explanation
The fringe visibility drops because the **interference** degrades when the path length difference exceeds the laser's coherence length; therefore, the interference pattern becomes blurred, rather than stimulated emission being affected under normal operating circumstances.
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