Assuming the laser emits equal powers from its two facets, what is the 'wall-plug' efficiency for converting electrical power into optical output if the voltage across the laser is 1.3 V at the...

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Extracted text: Assuming the laser emits equal powers from its two facets, what is the 'wall-plug' efficiency for converting electrical power into optical output if the voltage across the laser is 1.3 V at the forward bias current 33 mA? Express your answer as as percentage. Answer: