Photonic black hole - ePrints Soton

Vaidya, Nina, Plum, Eric, Vetlugin, Anton and Zheludev, Nikolai (2023) Photonic black hole. SPIE Optics + Photonics 2023, , San DIego, United States. 20 - 24 Aug 2023.

Record type: Conference or Workshop Item (Other)

Abstract

We present an optical analogue of a ‘black hole’ and report on its experimental realization. It is commonly believed that light absorption is probabilistic and wavelength-dependant. We report proof-of-principle experiments with a ‘black hole’ absorber that, given a direction of propagation, deterministically fully absorbs incident light irrespectively of the wavelengths. For the first time in this field, we report broadband coherent perfect absorption for applications such as detection, energy conversion, multi-spectral camouflage, and stealth technologies. Analytical calculations and experimental demonstrations indicate nearly 100% absorption across the electromagnetic spectrum and almost no reflection back from the ‘black hole’ absorber device.

(This invited talk was scheduled for 20th August 2023, but the oral presentation was cancelled due to Hurricane Hilary.)

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