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

Claim 10:
11. A method comprising:
directing an original light field across a first beam splitter such that the original light field is split into a first light field and a second light field;
delaying the first light field to create a delayed light field;
directing the second light field across an object of interest, thereby creating a third light field having new spectral frequency components compared to the second light field;
collecting the third light field after the second light field scatters from the object of interest and/or after the second light field transmits through the object of interest;
directing the delayed light field into a material to generate a portion of the delayed light field having the same frequency components as the third light field;
combining the third light field with the portion of the delayed light field having the same frequency components as the third light field in a second beam splitter, thereby creating combined light fields;
directing the combined light fields onto one or more detectors; and
determining a frequency-dependent phase and/or amplitude of the combined light fields based on a delay between the delayed light field and the second light field.