Ultrahigh resolution all-reflective optical coherence tomography system with a compact fiber-based supercontinuum...

Area of Science:

• Biomedical optics
• Optical imaging technologies
• Advanced microscopy

Background:

• Chromatic dispersion limits resolution in traditional optical coherence tomography (OCT) systems.
• Achieving ultrahigh resolution in OCT is crucial for detailed biological sample analysis.
• Supercontinuum sources offer broad bandwidths for enhanced OCT performance.

Purpose of the Study:

• To construct and characterize an all-reflective OCT system.
• To leverage a novel fiber-based supercontinuum source for improved imaging.
• To overcome chromatic dispersion limitations for ultrahigh-resolution OCT.

Main Methods:

• Utilized an all-reflective optical design to eliminate chromatic dispersion.
• Integrated a compact fiber-based broadband supercontinuum source.
• Characterized the system's axial resolution and dynamic range.

Main Results:

• Achieved an axial resolution of 2 μm in air.
• Demonstrated an 87 dB dynamic range.
• Acquired ultrahigh-resolution OCT images of biological samples at 1300 nm.

Conclusions:

• The all-reflective OCT system effectively eliminates chromatic dispersion.
• The developed system provides ultrahigh resolution for biological imaging.
• This technology advances the capabilities of optical coherence tomography.