Researchers at Eindhoven University of Technology (Tu/e) and the Dutch Institute for Fundamental Energy Research (DIFFER), both in the Netherlands, have developed a new type of low-energy, nanoscale laser that transmits in all directions. The key to this omnidirectional light emission is the introduction of irregularities into the laser materials – a structure that laser makers usually work hard to avoid.
The team of Mohammad Ramezani, Quynh Le-Van, Alexei Halpin, and Jaime Gómez Rivas say that they foresee a “a vast range of potential applications”. The results are published in Physical Review Letters.
The scientists from TU/e and DIFFER have investigated the role of imperfections and disorder in nanolasers. By introducing a slight degree of disorder, they have observed a dramatic change: the laser no longer emits in one specific direction, but in all directions.