Microwave pulses caused bizarre ‘Havana syndrome,’ report suggests

A string of mysterious neurological illnesses reported by U.S. diplomats in Cuba was likely caused by directed microwave energy, according to a new report from the National Academies of Sciences. In late 2016, people who worked at the U.S. embassy in Havana, Cuba, started to develop unexplained symptoms including hearing loud noise accompanied by pain […]

Laser technology: New trick for infrared laser pulses

IMAGE: Gottfried Strasser, Benedikt Schwarz, Johannes Hillbrand and Nikola Opacak view more  Credit: TU Wien Ordinary solid-state lasers, as used in laser pointers, generate light in the visible range. For many applications, however, such as the detection of molecules, radiation in the mid-infrared range is needed. Such infrared lasers are much more difficult to manufacture, especially […]

Quantum cascade lasers (QCLs) exhibit extreme pulses

Quantum cascade photonic device, from Spitz et al., doi 10.1117/1.AP.2.6.066001. Credit: SPIE Extreme events occur in many observable contexts. Nature is a prolific source: rogue water waves surging high above the swell, monsoon rains, wildfire, etc. From climate science to optics, physicists have classified the characteristics of extreme events, extending the notion to their respective […]