If you have cable TV, or a sattelite dish or even an antenna, you know that what you watch on TV has to get there somehow. It's OK for us to send regular pictures to a TV, but we cannot send a hologram. In fact, we are not even close to being at the point where we can send a hologram and have it show up in someone's house. But it will happen. And maybe, yes maybe, you'll be part of it.
Lasers are very simple tools.
Especially, the lasers that are used to make most holograms. A laser is a very thin glass tube, about the size of a straw that you use to drink your soda and juice. In this glass tube is a gas. Not like the gas you put in your car, silly. There are two gases in most of the lasers used to make holograms.