Wave Optics Experiments with 405nm Violet Laser Diode Module In order to achieve precise and clear dot indication for wave optics experiment, it makes a good job with a Berlinlasers 405nm violet laser diode module. Ultra compact size and precise violet laser dot is used for experiments on interference, diffraction, polarization, and spectral observation, assisting in the explanation of optical principles and facilitating classroom demonstrations and group practical exercises for students. https://www.berlinlasers.com/405nm-violet-laser-diode-module