Micro‐and nanolasers are emerging optoelectronic components with many properties still to
be explored and understood. On the one hand, they make it possible to address …

Topological lasers are immune to imperfections and disorder. They have been recently
demonstrated based on many kinds of robust edge states, which are mostly at the …

Photonic crystal cavities enable strong light–matter interactions, with numerous applications,
such as ultra-small and energy-efficient semiconductor lasers, enhanced nonlinearities and …

Topological edge states exist at the interfaces between two topologically distinct materials.
The presence and number of such modes are deterministically predicted from the bulk band …

Telecom-band single nanowire lasers made by the bottom-up vapor-liquid-solid approach,
which is technologically important in optical fiber communication systems, still remain …

Measured and calculated results are presented for the emission properties of a new class of
emitters operating in the cavity quantum electrodynamics regime. The structures are based …

Thresholdless lasing is an outstanding challenge in laser science and is achievable only in
devices having near unity quantum efficiency even when not lasing. Such lasers are …

Exploring the limits of spontaneous emission coupling is not only one of the central goals in
the development of nanolasers, it is also highly relevant regarding future large-scale …

Rate equations for micro-and nanocavity lasers are formulated which take account of the
finite number of emitters, Purcell effects as well as stochastic effects of spontaneous …

Nanolasers based on emerging dielectric cavities with deep sub‐wavelength confinement of
light offer a large light‐matter coupling rate and near‐unity spontaneous emission factor, β β …