A QC laser is sometimes referred as:
A)unipolar laser
B)bipolar laser
C)gain guided laser
D)non semiconductor laser

Question

Quizplus · Accepted Answer

Quantum Cascade (QC) lasers are referred to as unipolar lasers because their operation is based on transitions between conduction band sublevels in a single type of carrier, electrons, unlike traditional semiconductor lasers that rely on electron-hole recombination across the bandgap.

A QC Laser Is Sometimes Referred As