1) A semiconductor laser diode emits at λ=1.5 µm. It has a threshold current of Ith=30 mA; above the threshold, the opti

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1) A semiconductor laser diode emits at λ=1.5 µm. It has a threshold current of Ith=30 mA; above the threshold, the opti

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1) A semiconductor laser diode emits at λ=1.5 µm. It has a
threshold current of Ith=30 mA; above the threshold, the optical
power rises at a rate of 0.2 mW/mA. Find the quantum efficiency of
the diode for the current I=50 mA.
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