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Voltrex

Volumetric vectror display using intersecting IR lasers, galvanometers, and upconverting phosphors

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Shine two IR lasers into a volume of "anti-Stokes" upconverting phosphors suspended in epoxy. Where they intersect, the energy density is double that of the rest of the beams. Given the non-linearity of the phosphors, the invisible IR laser is converted to visible light high contrast. By controlling the 3D position of the intersection quickly through the use of galvanometers (common for laser engravers and laser light shows), a 3D vector image can be traced, producing a vibrant form of volumetric display.

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