Researchers Discover New Ways to Excite Spin Waves with Extreme Infrared Light

January 31, 2024 • by Marc Airhart

New ultrafast method for controlling magnetic materials might enable next-generation information processing technologies.

Two red waves enter a crystal from the left and on the other side, a blue and green wave emerge, each with a different wavelength

This illustration shows that a pair of intense THz laser pulses drives spin waves in an antiferromagnetic material, which radiate nonlinear emissions at the sum- and difference-frequencies. Illustration courtesy of University of Texas at Austin & MIT researchers.


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