How to make laser beam?

please, help. How to make laser beam? which will reflected from mirrors or something else
Thank you

You have two options that I can think of:

  1. Make a physical model of the beam (i.e. an elongated cylinder) and apply an emission material to it. This is how I achieved the laser in the following animation. The downside is that this will not reflect in a physically correct manner and you’ll have to fake it.

https://www.youtube.com/watch?v=pnxZsk0grNw

  1. Use a very narrow spot lamp. This should reflect naturally, unfortunately the beam won’t be visible unless you have some material to scatter the beam (volume scatter) - this will be very noisy and slow however.

This is a very nice way of doing it, but you can make it even more believable by using glare effects in the blender compositer.

I did…