Subject: Are lasers wavelengths easily manipulated

I have an idea for a truly 3d television.  I was googling around and saw your post about using two 
infrared beams to create a visible point where they intersect which is the exact idea I had.  Putting 
an array of lasers on intersecting x and y planes you could have visible points of light in 3d space.  
Manipulating those points could create essentially pixels.  Sounds feasable to me.  I don't know if the 
wavelength of a laser is easily manipulated.   If not that'd basically ruin the idea.

Re: Are lasers wavelengths easily manipulated