On a semiconductor laser with a p–n tunnel junction with radiation emission through the substrate open site


Date: Nov 4, 2015

A multiwell interband cascade laser with a tunnel junction within a single waveguide and radiation emission through the substrate is implemented for the first time. It is shown that such a laser heterostructure design provides the more efficient population of quantum wells in comparison with a conventional multiwell laser with radiation emission through the substrate, due to which the lasing threshold is significantly lowered.

Application: Others