Scientists create a lightsaber-like laser antenna that transmits radio waves
Researchers at North Carolina State University have created a radio antenna that uses a laser-generated plasma beam instead of traditional metal structures. This 'lightsaber-like' device is tunable and could simplify antenna design for space and communication applications.
Why it matters
This technology could lead to more compact, lightweight, and versatile communication equipment for satellites and space exploration.
Scientists have demonstrated a new type of radio antenna that looks remarkably like a lightsaber. Instead of using a conventional metal structure, the device relies on a laser to create a narrow beam of plasma capable of transmitting radio waves.
The technology could eventually make it possible to build antennas that change their length and direction on demand, opening up new possibilities for wireless communications, radar, satellites, and space exploration.
"The plasma beam antenna looks like a lightsaber and is tunable, meaning we should be able to transmit across a broad range of frequencies," says Prya Darshni, corresponding author of a journal article on the work and a Ph.D. student at North Carolina State University. "And while we have not demonstrated its ability to serve as an antenna that can receive radio signals, there's no reason to believe it wouldn't also work as a receiver."
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