Snapshot multi-frame parallel spectral holographic microscopy based on a reconfigurable optical comb.

Area of Science:

• Optics and Photonics
• Microscopy
• Materials Science

Background:

• Holographic microscopy offers high-resolution 3D imaging capabilities.
• Acquiring multi-wavelength spectral information typically requires significant acquisition time.
• Existing systems may lack flexibility in controlling spectral parameters.

Purpose of the Study:

• To introduce a snapshot multi-frame parallel holographic microscopy system.
• To enable rapid acquisition of high-quality spectral holograms.
• To demonstrate high-performance four-dimensional (4D) imaging.

Main Methods:

• Utilized a reconfigurable optical comb source.
• Incorporated a digital micromirror device (DMD) based spectrum filter system.
• Employed a spectroscopic Michelson interferometric system for data capture.

Main Results:

• Achieved arbitrary tuning of comb spacing and number.
• Enabled multi-frame image capture without overlap in a single exposure.
• Successfully performed 45-wavelengths holographic imaging of perovskite micro-platelets.

Conclusions:

• The developed system significantly reduces acquisition time for spectral holograms.
• Demonstrated the system's capability for high-performance four-dimensional (4D) imaging.
• The reconfigurable optical comb source provides enhanced flexibility for holographic microscopy applications.