Journal article

High performance laser shutter using a hard disk drive voice-coil actuator

LP Maguire, S Szilagyi, RE Scholten

REVIEW OF SCIENTIFIC INSTRUMENTS | AMER INST PHYSICS | Published : 2004

Abstract

The adaptation of standard hard disk drive voice-coil actuator to provide a low-cost fast laser shutter was investigated. The voice-coil motors are used in modern computer hard disk drives to move a read-write head across the surface of a rapidly rotating magnetic media platter. The capability of rotary or swing-arm actuators of large accelerations and positioning accuracy of better than 100nm was analyzed. It was found that the shutter velocity was determined by recording the motion of the shutter across an expanded laser beam.

University of Melbourne Researchers