Multifunctional Metalens Unlocks With Light

Researchers at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have developed a flat optical component that is simultaneously a metalens, a microscope objective that can resolve details smaller than a wavelength of light, and an optical vortex and hologram generator. Each functionality is controlled by a different wavelength of light. “The breakthrough of this new flat optical device is that it can radically change its function based on the wavelength of light it reflects,” said Federico Capasso, the Robert Wallace Professor of Applied Physics at SEAS and senior author of the research.

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