Device for laser-optical generation of mechanical waves for processing and/or examining a body
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United States of America Patent
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Apr 15, 2014
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Jan 28, 2011
filing date -
Jan 29, 2010
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Abstract
A device for laser-optical generation of mechanical waves for processing and/or examining a body includes a laser light source for generation of laser light and a modulator, on which a generated laser light falls and with which, from an incident laser light, a predetermined laser light intensity distribution can be generated on or in the body, in such a way that mechanical waves are excited on or in the body, with which the body is processed and/or with which, via detection of said waves, the body can be examined. According to certain aspects of the invention, the modulator is formed as a diffractive optical element wherein a height profile structure is formed on the surface of the diffractive optical element, with which the phase of the incident laser light is varied, thus generating a predetermined laser light intensity distribution.
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