A maze of mirrors and lens turn any material into a light absorber that can be used to detect faint light or charge distant devices with light.
Karmela Padavic- Callaghan is a writer.
Any object can be turned into a highly efficient light absorber with the use of mirrors and lens.
The Hebrew University of Jerusalem has a person named Omri Haim.
It can be done by placing material into a maze of mirrors and lens. It can be used to detect faint starlight or to charge distant devices with lasers.
A group of people at the Hebrew University of Jerusalem built an absorber of light that was almost perfect.
Light bounces between mirrors until it is amplified enough to leave the device in a focused beam. In an anti-laser, light enters the device and is stuck in a series of bounces.
The red light was directed through a maze of carefully arranged glasses. The glass was supposed to absorb light. The light reflected off the mirrors and interacted with the images created by the lens in a way that it got diverted every time it came close to exiting the device.
The glass was able to absorb 15 percent of the light. The whole device absorbed about 98 percent of the light that entered it.
Similar devices used to absorb only light wave shapes and only when they were illuminated at certain angles. He says that the new anti-laser works for all shapes and angles.
The method could be used to collect light from very faint stars. It could be used to efficiently charge larger devices by hitting them with a laser from a distance.
The device may have to be miniaturised and integrated onto a chip before it can be used. The maze of instruments is larger than some devices like drones and vulnerable to being knocked over.
The journal's title is "science."
There are more on this topic.
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