Question

Distinguish between homo Junction and hetero Junction semiconductor lasers

Answer 1

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Junctions between differently doped regions of the same semiconductor material are called a homojunction, while a junction between two different types of materials is called a heterojunction.

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Answer 2

•A homojunction semiconductor laser is the junction between differently doped layers or regions of same semiconductor material having equal band gaps.

•A heterojunction semiconductor laser is the junction between different layers or regions of different types of semiconductor materials.

It improves the confinement of light and electrons for a diode laser to operate in pulsed mode at room temperature.