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

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3 Author(s)
Maguire, L.P. ; School of Physics, University of Melbourne, Victoria 3010, Australia ; Szilagyi, S. ; Scholten, R.E.

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Voice-coil motors in computer hard disk drives are shown to make excellent mechanical shutters for light beams. Shutter speeds in excess of 10 mm/ms are attained, allowing switching of a focused beam in under 10 μs. Aperture size can be up to 32 mm. As little as 1 mW of power is required for shutter operation. The shutter can be driven with a sinusoidal signal to switch at up to 100 Hz. The shutter is also suitable for x-ray applications. Essentially no modification of the drive or actuator is required for most types of operation.

Published in:

Review of Scientific Instruments  (Volume:75 ,  Issue: 9 )

Date of Publication:

Sep 2004

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