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Which risk increases when a semiconductor laser's active region is pushed to higher carrier injection?

A)Reduced optical pumping efficiency
B)Increased Auger recombination losses
C)Spatial hole burning reduction
D)Enhanced stimulated emission rate

💡 Explanation

Increased carrier density raises the rate of nonradiative Auger recombination because it requires three carriers to interact, therefore energy is lost to heat rather than light; rather than stimulated emission being favored, the efficiency drops significantly due to bandwidth limits.

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