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Estimate the fermi level difference at the threshold for a 535nm InGaAas green laser with a cavity length of 600um and a threshold current

Estimate the fermi level difference at the threshold for a 535nm InGaAas green laser with a cavity length of 600um and a threshold current of 0.95mA. Estimate transparency carrier density and plot the gain spectrum with key points in the gain spectrum labeled. Make any necessary assumptions for calculations.

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