The progression of carrier confinement from quantum wells to quantum dots has received
considerable interests because of the potential to improve the semiconductor laser …

The pursuit of compact lasers with low thresholds has imposed strict requirements on tight
light confinements with minimized radiation losses. Bound states in the continuum (BICs) …

A drawback of optical modes in microdisk cavities is their isotropic light emission. Here we
report a novel, robust, and general mechanism that results in highly directional light …

Lasers are recognized for coherent light emission, the onset of which is reflected in a
change in the photon statistics. For many years, attempts have been made to directly …

We present measurements of first-and second-order coherence of quantum-dot micropillar
lasers together with a semiconductor laser theory. Our results show a broad threshold region …

When it comes to laser phenomena in quantum-dot-based systems, usually atomic models
are employed to analyze the characteristic behavior. We introduce a semiconductor theory …

Experimental results for the carrier capture and relaxation dynamics in self-organized
semiconductor quantum dots are analyzed using a microscopic theory. Time-resolved …

We report direct evidence of enhanced spontaneous emission in a photonic-crystal (PhC)
light-emitting diode. The device consists of pin heterojunction embedded in a suspended …

We report on lasing in rolled-up microtube resonators. Time-resolved studies on these
semiconductor lasers containing GaAs quantum wells as optical gain material reveal …

An equation-of-motion based theory for the description of light emission from multilevel
semiconductor quantum dots (QDs) is presented. It accounts for electronic excitations in the …