Opto-acoustic methods and apparatus for performing high resolution acoustic imaging and other sample probing and modification operations
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United States of America Patent
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Dec 1, 2009
Grant Date -
Dec 7, 2006
app pub date -
Jan 4, 2006
filing date -
Jun 3, 2005
priority date (Note) -
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Abstract
An opto-acoustic transducer assembly includes a substrate; at least one layer of opto-acoustic material coupled to a surface of the substrate, where the at least one layer of opto-acoustic material generates sound waves when struck by pulses of pump light; and an acoustic lens configured to focus sound waves generated by the at least one layer of opto-acoustic material towards a sample. The acoustic lens is further configured to collect sound waves returning from the sample and to direct the returning sound waves to the at least one layer of opto-acoustic material. The at least one layer of opto-acoustic material is responsive to the returning sound waves for having at least one optical property thereof changed, where the change is detectable from a change in a characteristic of reflected pulses of probe light that are time delayed with respect to the pulses of pump light.
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