A system includes a laser source and a dual interferometer sub-system. A channel of the dual interferometer sub-system includes a first splitter element coupled to a first output beam from a laser source configured to split the first output beam into a first transmitted beam and a first reflected beam, a first power sensor configured to measure a power of the first transmitted beam, a first detector configured to receive a first interference signal from the dual interferometer sub-system and record a first interferogram frame. The system includes a controller coupled to the first power sensor and the first detector of the first channel of the dual interferometer sub-system configured to receive the first interferogram frame, receive a first laser power measurement from the first power sensor; and normalize an intensity of the first interferogram frame based on the first laser power measurement to produce a first normalized interferogram frame.