New Type Of Laser Discovered

A Princeton-led team of researchers has discovered an entirely new mechanism for making common electronic materials emit laser beams. The new laser phenomenon has some interesting features. For instance, in a conventional laser relying on low momentum electrons, electrons often reabsorb the emitted photons, and this reduces overall efficiency. In the new type of laser, however, this absorption is reduced by 90%. This could potentially allow the device to run at lower currents, and also makes it less vulnerable to temperature changes.