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a. You are designing a quantum well laser as we briefly discussed in the lecture on...

a. You are designing a quantum well laser as we briefly discussed in the lecture on the 1-D infinite square well. You want to make the well width such that an electron making a transition from the n=2 energy level to the n=1 energy level emits a photon of 1500 nm. Assuming the device can be modeled by the 1-D infinite square well, calculate the needed well width. (20 points) b. Based on your calculation, consult the attached figure. Knowing that you will need to make the well from one of the semiconductors on the figure, which semiconductor can give you the desired well width (or pretty close) you calculated above? (Recall that the well will need to be made up of layers of the semiconductor with a given lattice constant. Give reasons for your choice.

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Sorry for part b ...there must be the figure..but it is not mentioned in the question...so i apolozise for part b

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