The Board of Trustees of the University of Illinoi s
发明人:
Stephen A. Boppart,Paul Scott Carney,Nathan Shemonski
申请号：
US15185410
公开号：
US20160367146A1
申请日:
2016.06.17
申请国别(地区):
US
年份:
2016
代理人:
摘要：
Methods and apparatus for assessing and correcting phase variations and motion artifacts in a coherent tomogram of a sample. Coherent techniques are used scan a broadband optical beam across a sample in a specified scan pattern and to acquire a cube of complex data constituting a full tomogram. Generalized motion of the sample is then quantified based at least on a phase variation measured during the course of scanning the broadband optical beam in the specified scan pattern. Generalized motion includes both actual motion and apparent motion due to organized variation of some physical parameter such as temperature. Intensity structure of speckle imaged during the course of coherently acquiring the full tomograpm may be used to correct for motion of the sample in a plane transverse to a depth axis along the incident beam.
