title: Detection of ultrasound-modulated photons in diffuse media using the photorefractive effect.
abstract: Ultrasound-modulated optical tomography is a dual-wave sensing technique in which diffusive light in a turbid medium interacts with an imposed acoustic field. A phase-modulated photon field emanates from the interaction region and carries with it information about the optomechanical properties of the medium. We present a technique for detection of ultrasound-induced optical phase modulation using an adaptive, photorefractive-crystal-based interferometry system. Experimental results are presented demonstrating detection of ultrasound-modulated signals in highly scattering media by use of pulsed ultrasound insonation.
authors.affiliation: Department of Aerospace and Mechanical Engineering, Boston University, Boston, Massachusetts 02215, USA.
authors.forename: Todd W
authors.initials: TW
authors.lastname: Murray
authors.forename: Lei
authors.initials: L
authors.lastname: Sui
authors.forename: Gopi
authors.initials: G
authors.lastname: Maguluri
authors.forename: Ronald A
authors.initials: RA
authors.lastname: Roy
authors.forename: Alex
authors.initials: A
authors.lastname: Nieva
authors.forename: Florian
authors.initials: F
authors.lastname: Blonigen
authors.forename: Charles A
authors.initials: CA
authors.lastname: DiMarzio
mesh_terms: D007089:Image Enhancement / Q000379:methods*; D007368:Interferometry / Q000379:methods*; D007834:Lasers; D017785:Photons; D012031:Refractometry / Q000295:instrumentation / Q000379:methods*; D041622:Tomography, Optical / Q000295:instrumentation / Q000379:methods*; D014463:Ultrasonography / Q000295:instrumentation / Q000379:methods*