Harnessing Air and Sound to Deflect Laser Beams

Researchers have developed a novel method to deflect laser beams using air alone. By modulating the air with sound waves, an invisible grating is created that changes the direction of the laser light without contact. This technique offers precise control over laser light and preserves its original quality, making it promising for high-performance optics. The initial laboratory tests achieved a redirection efficiency of 50%, with potential for higher efficiencies in the future. The researchers see applications in material processing, fusion research, and particle accelerators, where strong laser beams can damage traditional optical elements. The technique can also be extended to other optical elements and wavelengths, opening up new possibilities in optics.