[BigSkyFreeper]

The problem is how do you know the laser is hitting the plane. Seeing a tiny green dot on a plane two miles away is not going to be easy.

Green lasers don't project a dot like a pocket sized red laser pointer. Just by Googling for green lasers they're sold commercially. Many times green lasers are used at rock concerts.

[SLB]

We have a green laser pointer where I work. It is the only eye safe one we use. Cost was pretty steep, about $100.00 for a pointer!