HOMODYNE TIME-DOMAIN ACOUSTO-OPTIC IMAGING FOR LOW-GAIN PHOTODETECTORS
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United States of America Patent
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Issued Date -
Jul 6, 2023
app pub date -
Dec 29, 2022
filing date -
Dec 30, 2021
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Abstract
A laser system for acousto-optics imaging is disclosed. The system comprises: a continuous wave laser source; a first beam splitter configured to split a laser emitted by the continuous wave laser source into a lasing beam and a reference beam; a lasing optical fiber diffusing the lasing beam to a subject; a reference optical fiber providing the reference beam; a collecting optical fiber capable of receiving a scattered beam from the subject; a second beam splitter for merging the scattered and reference beams into a merged beam, and at least one photodetector assembly with a bandwidth higher than the ultrasound frequency to detect the merged beam.
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