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← ScienceWhich risk increases when optical gain suddenly drops in a pulsed laser?
A)Spontaneous emission dominates amplified signal✓
B)Mode locking becomes self-sustaining
C)Q-switching becomes more reliable
D)Higher pulse repetition frequencies achievable
💡 Explanation
Spontaneous emission overwhelms the rapidly diminishing stimulated emission, because population inversion collapses quickly due to insufficient optical gain promoting stimulated emission; therefore the amplified signal is swamped, rather than improved mode locking or better Q-switching occurring.
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