Terahertz (THz) waves are located between microwaves and infrared light in the electromagnetic spectrum. They can pass through many materials without causing damage, making them useful for security ...

A new patterned spintronic emitter enables room-temperature control of terahertz wave polarization.

The custom design can integrate the following functionalities: superposition of multiple input ports and dichroic beam combination, beam expansion, beam shaping for beams with elliptical cross ...

Simply rotating the emitter allows for flexible and efficient switching between linear, elliptical, and circular polarization states. Critically, the device maintains high-quality circular ...