Patent ID: 11913886
Assignee: GEORGIA TECH RESEARCH CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. A method comprising:
directing an original light field across an object of interest, thereby creating a first light field with new spectral frequency content compared to the original light field;
collecting the first light field after it scatters from the object of interest or after it transmits through the object of interest;
directing the first light field across a first beam splitter such that the first light field is split into a second light field and a third light field;
delaying the second light field to create a delayed light field;
combining the delayed light field and the third light field in a second beam splitter to create combined light fields;
directing the combined light fields onto one or more detectors; and
determining a frequency-dependent amplitude of the combined light fields based on a delay between the delayed light field and the third light field;
wherein the second light field and the third light field are separately and simultaneously detected at +45 degrees and at −45 degrees with respect to their primary polarization direction.