A Cheap Laser Shutter Using a Hard Drive Disk

An anonymous contributor wrote in about making laser shutters using¬†hard disk drive rotary voice-coil actuators.¬†The contributor’s lab has made a couple of these which are controlled via an Arduino, at a much lower cost than shutters from Thorlabs or similar.

Another paper of a similar vein, by W. Bowden, R. Hill, G. Baird, and P. Gill creates a shutter from a Piezoelectric Cantilever Actuator. ArXiV Version here.