METHODS AND APPARATUS FOR SPECKLE-FREE OPTICAL COHERENCE IMAGING

摘要

An apparatus includes a light splitter to receive a light beam and direct a first portion of the light beam to a reference arm and a second portion of the light beam to a sample arm. The sample arm includes a phase scrambler, in a path of the second portion of the light beam, to cause local-random-time varying phase modulation to the second portion of the light beam. The sample arm also includes a controller to change the local phase of the second portion of the light. The apparatus further includes a detector, in optical communication with the reference arm and the sample arm, to detect an interference pattern produced by the first portion of the light beam propagated through the reference arm and the second portion of the light beam scattered from the sample via the sample arm.