Wave-front reconstruction via single-pixel homodyne imaging

Area of Science:

• Optical physics
• Image processing
• Metrology

Background:

• Traditional optical imaging often requires prior knowledge of the object or illumination.
• Full object recovery (phase and amplitude) is crucial for detailed material characterization.
• Limitations exist in current methods regarding information requirements and precision.

Purpose of the Study:

• To develop a method for complete optical object recovery without prior information.
• To demonstrate the capability of combined single-pixel imaging and homodyne detection for this task.
• To quantify the precision of the reconstructed phase and amplitude.

Main Methods:

• Integration of single-pixel imaging with homodyne detection.
• Acquisition of data without assumptions on object properties or illumination.
• Reconstruction of complex transmission (amplitude and phase) of semi-transparent objects.

Main Results:

• Successful full object recovery (phase and amplitude) demonstrated.
• Achieved phase precision of 0.02 radians.
• Achieved relative amplitude precision of 0.01.

Conclusions:

• The combined technique enables label-free, information-free optical reconstruction.
• High precision in both phase and amplitude recovery is attainable.
• This method offers a significant advancement in optical metrology and imaging.