Full-field optical coherence microscopy with Riesz transform-based demodulation for dynamic imaging.

Area of Science:

• Optics and Photonics
• Materials Science
• Biomedical Imaging

Background:

• Dynamic full-field optical coherence microscopy (DFF-OCM) is crucial for observing time-varying structures.
• Conventional methods often face limitations in speed and accuracy for dynamic processes.

Purpose of the Study:

• To introduce a novel DFF-OCM technique utilizing a scientific complementary metal-oxide-semiconductor (sCMOS) camera.
• To implement a demodulation scheme based on the Riesz transform and monogenic signals for enhanced imaging.
• To validate the method's performance against established techniques and demonstrate its application in materials testing.

Main Methods:

• Employed a scientific CMOS camera for high-speed image acquisition.
• Utilized a demodulation scheme incorporating the Riesz transform and monogenic signals for phase and amplitude extraction.
• Performed comparative analysis with phase-stepping and analytic reconstruction methods.
• Applied the technique to dynamic mechanical testing of a polymer/fiber composite.

Main Results:

• The proposed Riesz transform and monogenic signal-based demodulation scheme provides accurate dynamic imaging.
• The method demonstrates comparable or superior performance to conventional phase-stepping and analytic reconstruction.
• Successful application to dynamic mechanical testing of a polymer/fiber composite, revealing intricate structural responses.

Conclusions:

• The developed DFF-OCM approach offers a robust and efficient tool for dynamic imaging applications.
• This technique enhances the capability for analyzing time-dependent phenomena in materials science.
• The Riesz transform and monogenic signal-based method shows significant potential for future research and industrial applications.