Active mirror of the quantum cascade laser with surface emission with vertical cavity resonator

摘要

active mirror, as shown in figure, the quantum cascade laser emission surface with vertical wnu0119ku0105 resonance, laser type qc vcsel,is a multi-layer grid of subwave diffraction from one or different semiconductor materials with a refractive index of 2 - 10in which one surface is made parallel to each other, grooves of rectangular or trapezoidal cross-section and length less than 1 cm.in the semiconductor material between the grid strips, grooves are arranged in the form of semiconductor quantum wells active areas of equal thickness in each beltsituated one on the other extension.diffraction grid is constructed preferably of indium phosphide and / or gallium arsenide quantum wells, and preferably with mixtures of elements from group aluminium, gallium, indium, arsenic, phosphorus.