A volumetric full-color display realized by frequency upconversion of a transparent composite incorporating dispersed nonlinear optical crystals

摘要

A full-color, solid-state, volumetric display based on second harmonic generation in a transparent glass-ceramic (GC) containing second-order optical nonlinear crystals is described. The device uses infrared femtosecond laser beams that focus inside the GC to address red, green and blue voxels. Three-dimensional images are drawn by scanning the point of focus of the lasers inside of the material. The prototype device is demonstrated using conventional focusing optics and mechanical scanners, and the image is bright enough to be seen in ambient room lighting conditions.