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← ScienceWhich outcome results when amplified spontaneous emission overwhelms a laser cavity?
A)Reduced spatial mode power stability✓
B)Increased coherence of the output
C)Enhanced spectral bandwidth contraction
D)Higher optical damage threshold values
💡 Explanation
ASE can exceed gain clamping, which then reduces coherent power and beam direction stability because randomly emitted photons dominate; therefore, the laser's spatial coherence falters rather than narrowing the spectral bandwidth under optimum conditions.
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