US 11,796,383 B2
Ultrasound detection based on phase shift
Amir Rozental, Haifa (IL); Lucas Riobo, Buenos Aires (AR); and Yoav Hazan, Haifa (IL)
Assigned to TECHNION RESEARCH & DEVELOPMENT FOUNDATION LIMITED, Haifa (IL)
Appl. No. 17/420,903
Filed by TECHNION RESEARCH & DEVELOPMENT FOUNDATION LIMITED, Haifa (IL)
PCT Filed Jan. 7, 2020, PCT No. PCT/IL2020/050016
§ 371(c)(1), (2) Date Jul. 6, 2021,
PCT Pub. No. WO2020/144674, PCT Pub. Date Jul. 16, 2020.
Claims priority of provisional application 62/833,912, filed on Apr. 15, 2019.
Claims priority of provisional application 62/789,015, filed on Jan. 7, 2019.
Prior Publication US 2022/0074789 A1, Mar. 10, 2022
Int. Cl. G01H 9/00 (2006.01); A61B 5/00 (2006.01)
CPC G01H 9/004 (2013.01) [A61B 5/0097 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system for detecting acoustic waves, said system comprising:
an optical resonator configured to be impinged by acoustic waves;
a continuous-wave source laser beam directed to said optical resonator, wherein said source laser beam is propagated through said optical resonator, thereby generating a propagated laser beam; and
an interferometer configured for detecting said acoustic waves by monitoring transients in an optical phase in said propagated laser beam, wherein said transients are indicative of a waveform of said acoustic waves, wherein said reference beam comprises a replica of said source laser beam, and wherein said monitoring comprises interfering said propagated laser beam with a reference beam.