Fundamentals of Light and Lasers: Irradiance

This lab activity, presented by John Chamberlain, demonstrates the measurement of the power and irradiance of a laser beam. In the 10-minute video, Chamberlain introduces the necessary equipment, including a photo detector and power meter, and configurations necessary for the lab. In the first part of the lab, the process of taking the necessary measurements from the laser is demonstrated, as are the calculations for determining irradiance. The second part of the lab then shows the measurements and calculations for determining irradiance across varying distances. This lab, 1-3A, is the eighth 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.