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← ScienceWhich risk increases when operating a tunable diode laser near the mode-hop threshold?
A)Spurious frequency jumps occur✓
B)Gain medium depletes excessively
C)Optical cavity collapses violently
D)Pump current density fluctuates wildly
💡 Explanation
Spurious frequency jumps occur because thermal drift or current fluctuations can cause the laser's resonant frequency to abruptly shift via mode hopping, which alters the laser's output frequency rather than stabilizing it. Therefore, maintaining operation away from the threshold prevents instability.
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