Hyperspectral tomographic diffractive microscopy: Development and applications

Area of Science:

• Optics and Photonics
• Biomedical Imaging
• Materials Science

Background:

• Tomographic Diffractive Microscopy (TDM) offers label-free 3D imaging beyond confocal resolution.
• Previous TDM developments at IRIMAS enhanced capabilities in various configurations.
• Single-wavelength TDM struggles to differentiate chemically similar structures based on optical properties.

Purpose of the Study:

• To develop hyperspectral TDM for chemical specificity in 3D imaging.
• To enable 3D spectroscopic characterization by exploiting wavelength-dependent optical properties.
• To advance label-free imaging for complex transparent samples.

Main Methods:

• Integration of a supercontinuum source for multi-wavelength TDM capability.
• Development of hyperspectral synthesis techniques.
• Implementation of AI-enhanced reconstruction algorithms.
• Detailed description of TDM reconstruction principles.

Main Results:

• Demonstration of hyperspectral TDM for chemical specificity.
• Successful 3D spectroscopic characterization of samples.
• Enhanced capability for distinguishing chemically distinct structures.
• Potential for advanced biomedical and material imaging.

Conclusions:

• Hyperspectral TDM provides crucial chemical information for 3D imaging.
• The developed technology expands the application scope of TDM.
• Future work includes further instrumentation, calibration, and AI integration.