I have tried to research this through search engines but have come up with very little answers. This question is why I've registered with this forum.

 

I am curious about the behavior of low level infrared and laser beams similar to laser pointer pens and remote controls.

 

Specifically what happens when these low level beams intersect one another at exact or similar wavelengths. Do they ricochet do they pass through do they alter one another? etc. etc.

 

And whatever the differentials may be in their intersection is there a property change when one of the intersecting beams is turned off? Can that be seen as a variable difference in the patterns entirety?

 

Any thoughts or ideas are appreciated and welcomed.

 

Thank you for your time and interest.

They pass through each other. However, if you combine the beams, you can get interference and such:

http://en.wikipedia.org/wiki/Interference