Laser Photonics Semiconductor Lasers

Semiconductor Lasers

A semiconductor laser uses a semiconductor gain medium for optical amplification.  Semiconductor lasers are widely used for low-power applications, particularly telecommunications applications.  They can be pumped electrically or optically, but direct electrical pumping is of greater interest for most applications.  The physics of the semiconductor laser have important differences compared to those of the other laser types we’ve discussed thus far.  We will explore those physics in this section.