The growing interest in the use of near-infrared (NIR) radiation for spectroscopy, optical communication, and medical applications spanning both NIR-I (700–900 nm) and NIR-II (900–1700 nm) has driven ...

This microscopic light-matter-coupling is described by a spatially resolved microscopic theory based on Maxwell-Bloch-Langevin equations taking into account many-body interactions, energy transfer ...

In this work, we demonstrate optically-pumped stimulated emission from AlGaN/AlN double-heterostructure in the deep ultraviolet spectral range.