Photonics Focus Magazine vol. 4 issue 5

September/October 2023 | Vol. 4 | Issue 5

This issue of Photonics Focus examines the science of illusion. Optical cloaking explores the advanced technology used to render objects invisible. A story on optical surface exposure dating explains how a light-based technique can be used to  date ancient rock art. We also investigate the creation of deepfake images and the techniques being used to expose them. Finally, an issue on illusion would not be complete without a nod to Dennis Gabor, inventor of the hologram.

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Optical surface exposure dating, optical-surf for short, might solve the mystery of when individual carvings by Aboriginal groups in Western Australia were made.
Rock of ages: Photonics successfully dates ancient Australian rock art
Deepfakes—images and video created or altered by AI—are growing more sophisticated with each passing month and have led to widespread concern among scientists, journalists, and government officials.
Exposing deepfake imagery
Visible light can potentially be warped around a point in space, essentially cloaking that space and turning it invisible.
The invisibility illusion
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Launched in 2020, Photonics Focus® is the award-winning society magazine of SPIE. Articles showcase scientific discovery and innovative real-world applications of optics and photonics.

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