Also this, Project Bluebeam:
Google search 3-D Holographic Display Using Strontium Barium Niobate Army Research Lab:
https:// www.google.com/search?q=3-D+Holographic+Display+Using+Strontium+Barium+Niobate+Army+Research+Lab
'"[PDF]3-D Holographic Display Using Strontium Barium Niobate'"
www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA338490&Location=U2&doc=Get