PHYSICS

The Physics of Electronic Devices and Circuits

The Physics of Electronic Devices and Circuits

Introduction

The work of semiconductor lasers is based on the amplification of light in the active region of semiconductor material. Most semiconductor lasers are the radiative quantum transitions between the allowed energy bands of the semiconductor (interband transitions) the conduction and valence bands.

Semiconductors

The active region of lasers based on interband transitions characterized by a thermodynamically non-equilibrium distribution of carriers in the conduction band which has a shape characteristic of a degenerate n-type semiconductor and the valence band, for the p-type semiconductor. This distribution of charge carriers called ...