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Robust correction of interferometer phase drift in transmission matrix measurements
Applied Optics
|October 18, 2022
Summary
This study presents a new method to accurately measure transmission matrices of scattering media despite rapid optical phase drift. A single additional measurement corrects phase drift, simplifying experiments and improving data acquisition.
Area of Science:
- Optical physics
- Wave propagation
- Metrology
Background:
- Characterizing complex scattering media requires measuring their transmission matrix.
- Rapid phase drift in optical systems complicates accurate transmission matrix acquisition.
- Existing methods struggle with significant phase variations between measurements.
Purpose of the Study:
- To develop a robust method for constructing transmission matrices in the presence of fast and erratic phase drift.
- To eliminate the need for continuous phase tracking in interferometric measurements.
- To relax stringent phase stability requirements for optical experiments.
Main Methods:
- A novel approach utilizing a single additional measurement to precisely characterize phase drift between two sequential measurements.
- Correction of the exact phase drift using the information from the additional measurement.
- Construction of the complex-valued transmission matrix from a series of interferometric measurements.
Main Results:
- Successfully characterized and corrected for rapid phase drift.
- Demonstrated the ability to construct transmission matrices under conditions of significant and erratic phase variations.
- Significantly reduced the need for high phase stability in the interferometer.
Conclusions:
- The presented method enables reliable transmission matrix construction even with fast phase drift.
- This technique simplifies experimental setups and broadens the applicability of transmission matrix measurements.
- It overcomes a major challenge in optical metrology for scattering media characterization.
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