Electro-optic despeckling modulator and method of use
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United States of America Patent
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Sep 14, 2004
Grant Date -
Feb 13, 2003
app pub date -
Aug 8, 2001
filing date -
Aug 8, 2001
priority date (Note) -
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Abstract
A method of reducing the appearance of speckle resulting from a coherent light beam, includes the steps of: providing an electro-optic device having, an electro-optic substrate, an electrode array arranged on the surface of the electro-optic substrate, at least one electrode located on the opposite surface of the electro-optic substrate, and means for applying voltage to the electrodes to generate a variation in a refractive index profile within the substrate; and directing the light beam through the electro-optic device while applying voltage to the device, whereby the temporal and spatial phase of a light beam passing through the substrate is altered, thereby reducing the appearance of speckle.
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