Physicists create new form of antenna for radio waves

Published on October 23, 2023

Physicists at the University of Otago have developed a portable atomic radio frequency sensor using a small glass bulb filled with atomic vapor in a Rydberg state. This innovative sensor, wired with laser beams, offers superior performance compared to traditional antennas, as it is highly sensitive, tunable, and compact. It has the potential to simplify communication for soldiers on the battlefield, cover the entire radio frequency spectrum, and eliminate the need for multiple antennas. Notably, it operates without metal components and is accessed via laser light, making it a valuable tool in defense, communications, and satellite technology. In a successful out-of-lab demonstration, the sensor measured fields up to 30 meters away using a free-space laser link, showcasing its practicality and flexibility.

Link to the full article: https://phys.org/news/2023-10-physicists-antenna-radio.amp

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