Question: 5 . How large an energy gap is required for a blue semiconductor laser with a wavelength of 4 6 0 nm ? What materials

5. How large an energy gap is required for a blue semiconductor laser with a wavelength of460nm? What materials/materials systems would be suitable for this application? Compared to silicon (our most generic semiconducting material), what is the most important feature of the semiconductor band structure that allows for it to be used in a laser?

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