Fundamentals of Light and Lasers: Power Transmission

This lab activity, presented by John Chamberlain, teaches students to measure the power transmitted from a helium neon laser through various colored filters. In the 10-minute video, Chamberlain demonstrates the process by shining a laser through various colored filters, including blue, yellow, green, and red. He then provides examples of equations students can use to calculate transmittance (Tmeas = Pout / Pin). This lab, 1-3D, is one in a series of 20 available on the Fundamentals of Light and Lasers. 

These videos were created as a supplement to the Fundamentals of Light and Lasers curriculum available through OP-TEC, but can be used independently to guide lab activities related to this topic.