Fairy Lights Holographic Display
Agroup of Japanese researchers recreated a miniature "Princess Leia materializing above R2-D2"-like hologram with femtosecond lasers and clever holographic computation.
Fairy Lights Holographic Display Video
Though still in the research phase and requiring bulky equipment, the system is working, even if the images produced are still small (no more than 8 cubic millimeters).
For more info, access the original paper in DigitalNature.