The term whispering gallery mode (WGM) was first introduced to describe the curvilinear
propagation of sound waves under a cathedral dome. The physical concept has now been …

Ten years ago, three teams experimentally demonstrated the first spasers, or plasmonic
nanolasers, after the spaser concept was first proposed theoretically in 2003. An overview of …

Subwavelength optical resonators made of high-index dielectric materials provide efficient
ways to manipulate light at the nanoscale through mode interferences and enhancement of …

This is a review on theoretical and experimental studies on dielectric microcavities, which
play a significant role in fundamental and applied research. The basic concepts and theories …

We provide a self-consistent electromagnetic theory of the coupling between dipole emitters
and dissipative nanoresonators. The theory that relies on the concept of quasinormal modes …

Amplifiers and lasers based on surface plasmon–polaritons (SPPs) have been studied for
around three decades. Research in this area has experienced particularly significant growth …

It is an important challenge to reduce the power consumption and size of lasers, but
progress has been impeded by quantum noise overwhelming the coherent radiation at …

A nanolaser is a key component for on-chip optical communications and computing systems.
Here, we report on the low-threshold, continuous-wave operation of a subdiffraction …

Nanolasers generate coherent light at the nanoscale. In the past decade, they have attracted
intense interest, because they are more compact, faster and more power-efficient than …

Near-infrared lasers are important for optical data communication, spectroscopy and
medical diagnosis. Semiconductor nanowires offer the possibility of reducing the footprint of …