Voice-coil motors in computer hard disk drives are shown to make excellent mechanical shutters for light beams. Shutter speeds in excess of are attained, allowing switching of a focused beam in under . Aperture size can be up to . As little as of power is required for shutter operation. The shutter can be driven with a sinusoidal signal to switch at up to . The shutter is also suitable for x-ray applications. Essentially no modification of the drive or actuator is required for most types of operation.
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Research Article| September 01 2004
High performance laser shutter using a hard disk drive voice-coil actuator
L. P. Maguire;
L. P. Maguire, S. Szilagyi, R. E. Scholten; High performance laser shutter using a hard disk drive voice-coil actuator. Rev. Sci. Instrum. 1 September 2004; 75 (9): 3077–3079. https://doi.org/10.1063/1.1786331
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