Using a novel method, beams of laser light can be deflected using air alone. An invisible grating made only of air is not only immune to damage from the laser light, but it also preserves the original quality of the beam, reports the interdisciplinary research team in the journal Nature Photonics. The researchers have applied for a patent for their method.
The innovative technique uses sound waves in order to modulate the air in the region where the laser beam is passing. “We’ve generated an optical grating with the help of acoustic density waves,” explains first author Yannick Schrödel,…
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