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Ntziachristos, V. ; Razansky, D. ; Rosenthal, A.*

Ultrasound detector and detecting device for optoacoustic or thermoacoustic imaging.

Schutzrecht WO 2012/103903 A1 (2012)
An ultrasound detector (10), in particular adapted for ultrasound detection with medical applications, comprises an optical waveguide (11), and at least one Bragg grating (12), which is created with a predetermined refractive index modulation amplitude (?n) in the optical waveguide, wherein the at least one Bragg grating includes a localized defect (13) in periodicity, so that a localized-light resonance portion is formed around the defect, the optical waveguide (11) is a non-amplifying optical medium, said localized-light resonance portion has spectral properties which are capable to be modulated in response to an ultrasound oscillation, wherein the refractive index modulation amplitude (?n) is selected such that the localized-light resonance portion is concentrated at the defect in periodicity and the ultrasound oscillation can be sensed by the at least one Bragg grating (12) with an acoustic sensitivity most of which being obtained over the localized-light resonance portion. Furthermore, an ultrasound detecting device including a wideband pulsed interrogation light source, an imaging apparatus, and methods of detecting ultrasound oscillations using the ultrasound detector (10) are described.
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Publication type Other: Patent
Corresponding Author
Publication date 2012-08-09
Application number WO 2012/103903 A1
Application date 2011-02-04
Patent owner Helmholtz Zentrum München, Deutsches Forschungszentrum für Gesundheit und Umwelt (GmbH); Ntziachristos, V.; Razansky, D. Rosenthal, A.
Application country EP
Non-patent literature Publications
Institute(s) Institute of Biological and Medical Imaging (IBMI)