Unified k-space theory of optical coherence tomography
| Autor: | Kevin C. Zhou, Joseph A. Izatt, Ruobing Qian, Sina Farsiu, Al-Hafeez Dhalla |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
genetic structures
Physics::Medical Physics FOS: Physical sciences 02 engineering and technology 01 natural sciences 010309 optics Diffraction tomography Speckle pattern Optics Optical coherence tomography 0103 physical sciences medicine Ewald's sphere Physics medicine.diagnostic_test business.industry Fourier optics Astrophysics::Instrumentation and Methods for Astrophysics 021001 nanoscience & nanotechnology Atomic and Molecular Physics and Optics eye diseases Interferometry Bessel beam sense organs 0210 nano-technology business Optics (physics.optics) Coherence (physics) Physics - Optics |
| Popis: | We present a general theory of optical coherence tomography (OCT), which synthesizes the fundamental concepts and implementations of OCT under a common 3D k -space framework. At the heart of this analysis is the Fourier diffraction theorem, which relates the coherent interaction between a sample and plane wave to the Ewald sphere in the 3D k -space representation of the sample. While only the axial dimension of OCT is typically analyzed in k -space, we show that embracing a fully 3D k -space formalism allows explanation of nearly every fundamental physical phenomenon or property of OCT, including contrast mechanism, resolution, dispersion, aberration, limited depth of focus, and speckle. The theory also unifies diffraction tomography, confocal microscopy, point-scanning OCT, line-field OCT, full-field OCT, Bessel beam OCT, transillumination OCT, interferometric synthetic aperture microscopy (ISAM), and optical coherence refraction tomography (OCRT), among others. Our unified theory not only enables clear understanding of existing techniques but also suggests new research directions to continue advancing the field of OCT. |
| Databáze: | OpenAIRE |
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