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

Claim 0:
1. A method comprising:
directing an input light field across a beam splitter such that the input light field is split into a first light field and a second light field;
directing the first light field to a delay module;
delaying the first light field via the delay module to create a delayed light field;
combining a third light field with the second light field and the delayed light field to create combined light fields;
directing the combined light fields across an object of interest, thereby creating one or more new light fields with new spectral frequency content;
directing one or more of the new light fields onto one or more detectors after transmission through or scattering from the object of interest; and
determining a frequency-dependent phase and/or amplitude of one or more of the new light fields based on a delay between light fields of the combined light fields;
wherein the third light field is an optical pulse with spectral content of less than 30 wavenumbers and being fixed in time with the second light field; and
wherein either:
the one or more new light fields are detected at higher optical frequencies than the third light field; or
the one or more new light fields are detected at lower optical frequencies than the third light field.