A major challenge in self-powered wearable sensors for health care monitoring is distinguishing different signals when they occur at the same time. Researchers addressed this issue by uncovering a new ...

Laser diodes are semiconductors that generate light and amplify it using repeated reflection or "optical feedback." Once the ...

Terahertz radiation (THz), electromagnetic radiation with frequencies ranging from 0.1 and 10 THz, is central to the ...

The US Navy demonstrated its new HELIOS laser weapon that intercepts enemy drones, missiles, and sensors. The Pentagon’s annual Director, Operational Test and Evaluation (DOT&E) report shows the USS ...

A new study shows that when combined with lasers, atomic clocks can help us catch the most mysterious matter in the universe.

A new publication from Opto-Electronic Advances; DOI 10.29026/oea.2025.240275, discusses A highly sensitive laser gas sensor based on a four-prong ...

The U.S. military has tested for the first time a laser weapon as fast as the speed of light, capable of melting missiles, ...

The undated image shows the U.S. Navy testing a weapon system known as HELIOS from the USS Preble destroyer in the middle of the ocean.

Optical encryption involves securing data at the optical transport level of a network, which avoids slowing the overall system with additional hardware at the non-optical levels instead. This approach ...