For more info : A_intro_to_the_Holographic_Projection_David_Kim_AKA_20141106.pdf
This is an introduction to Holographic projection by David Kim.
This is about principle and applications of analog and digital holograms.
There are lot of fun facts about hologram such as hologram concerts including 2pac, Vocaloid Hatsune Miku, Michael Jackson, etc. and hologram transmission, companies and displays used for smartphones.
Check more about hologram in the attachment!