Population inversion in semiconductor laser diode is achieved by:

1.	Population inversion in semiconductor laser diode is achieved by:
A.	Lightly doping p and n sides
B.	Introducing trap centres on p and n sides
C.	Heavily doping p and n sides
D.	Reverse biasing the junction
Answer» C. Heavily doping p and n sides

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Population inversion in semiconductor laser diode is achieved by:

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