Optical sensing based on measurements of displacements induced by optical scattering forces in viscoelastic media using phase-sensitive optical coherence tomography

US10072920B2 · kind B2 · utility

Assignee

• Cornell University · IT

Inventors

• Steven Adie · Ithaca, US
• Gavrielle Untracht · Short Hills, US
• Nichaluk Leartprapun · Ithaca, US

Key dates

• Filing date: May 23, 2016
• Grant date: Sep 11, 2018
• Expiry date: Jul 15, 2036

Classification

• Technology area (CPC G): Physics
• CPC primary: G01B9/02015
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Disclosed are devices and techniques based on optical coherence tomography (OCT) technology in combination with optical actuation. A system for providing optical actuation and optical sensing can include an optical coherence tomography (OCT) device that performs optical imaging of a sample based on optical interferometry from an optical sampling beam interacting with an optical sample and an optical reference beam; an OCT light source to provide an OCT imaging beam into the OCT device which splits the OCT imaging beam into the optical sampling beam and the optical reference beam; and a light source that produces an optical actuation beam that is coupled along with the optical sampling beam to be directed to the sample to actuate particles or structures in the sample so that the optical imaging captures information of the sample under the optical actuation.