The Green Diffraction Laser is an optional accessory for the Diffraction Apparatus. Operating at 520 nm, it allows students to see and measure how diffraction patterns depend on light wavelength.

Note that the Green Laser does not include its own power supply. It uses the same power supply as the Red Diffraction Laser, which is the same as the LabQuest. The Green Diffraction Laser is a Class 2 laser product.