This matter is both a superfluid, which has zero friction and viscosity, and a kind of Bose-Einstein condensate - sometimes described as the fifth state of matter - and it allows light to actually flow around objects and corners.
A team led by researchers at the University of Bristol developed a method for operating mass manufacturable photonic sensors at the quantum limit. The work paves the way for practical applications, including the monitoring of greenhouse gas emissions and cancer detection.
Researchers at Harvard's John A. Paulson School of Engineering and Applied Sciences (SEAS) built highly reflective mirrors that direct the beams from high-powered continuous-wave (CW) lasers without incurring damage. The mirrors are made from single-crystal diamond. Conventional mirrors are made from multiple layers of coatings with various optical properties.
Aerial drones are essentially the new improvised explosive devices — they're relatively cheap and easily weaponized. Weaponized swarms of drones working together on a mission are an asymmetric threat that can quickly turn into an ugly situation. In the future, drones are expected to become faster, more autonomous, more difficult to detect or jam, and deadlier, with more sophisticated swarm attacks.
Laser based optical communications have been developed to complement traditional radio frequency communications with satellites. Accurately positioned by fast steering mirrors, they provide higher throughput, require less power, and offer higher security.
Time-resolved, ultrafast spectroscopy allows a very close and precise look at dynamic processes in materials and chemical compounds. With the help of ultra-short pulse lasers, changes on an incredibly small time scale down to the attosecond range can be made visible.
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