QYR Market Research Global Laser Diode market research | Página 3

QYResearch
Laser diodes are electrically pumped semiconductor lasers in
which the gain is generated by an electrical current flowing
through a p–n junction or (more frequently) a p–i–n structure.
In such a heterostructure, electrons and holes can recombine,
releasing the energy portions as photons. This process can be
spontaneous, but can also be stimulated by incident photons,
in effect leading to optical amplification, and with optical
feedback in a laser resonator to laser oscillation.
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