I am modeling a laser beam in blender, and I was wondering exactly how to achieve the "beam" look of the laser.
I don't exactly want to use a bright red lamp, or an emission shader, because obviously laser dots don't really change in size as you increase the distance between it and the producer.
Here is an reference image of a beam similar to what I am trying to achieve:

There are a couple questions similar to this one, but they obviously do not give information about achieving the volume of the laser, or the bright "star" at the end.
A detailed node setup for a type of projection like this would be the correct solution to this question.
Part of the problem: When I tried the laser lamp node setup for my lamp, it had no effect except for color.
Here is a picture of the lazer lamp's node setup with the model of the lazer case in material view:

This is in rendered view with a volume cube surrounding everything. (Lamp is still selected):
This is my model of the laser case:
Here is the .blend if you want to work with it: