Laser Beam Diameter and Divergence (Lab 11 of 23)

This video from Laser-Tec is part of a series of light and optics experiments. In this lab, participants measure laser beam divergence, calculate a laser beam's diameter, determine the divergence of an HeNe laser, and calculate beam waist. Equipment includes a laser diode module, laser holder, two plastic lens holders, measuring tape, a protractor, pencil, and white sheet of paper. The video recording runs 11:17 minutes in length.