6A45.u1 - Collimation with a Lens
To show how a laser beam can be collimated using a lens.
Assembly the laser tank with the fog machine on one end and the lens/beamsplitter assembly with the laser at the other end. Check that the fog machine is full of liquid and that the laser and lens/beamsplitter assembly is aligned. To know that you are properly aligned, the outgoing beams should be parallel.
Turn on the fog machine and the laser. As long as the alignment has been done and nothing was bumped, you should see a single laser beam hitting the beamsplitter that is located at the focal point of the attached lens. As the light hits the lens, it is collimated into 3 parallel lines.