Spatial coherence effect on layer thickness determination in narrowband full-field optical coherence tomography

Avner Safrani, Ibrahim Abdulhalim

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Longitudinal spatial coherence (LSC) is determined by the spatial frequency content of an optical beam. The use of lenses with a high numerical aperture (NA) in full-field optical coherence tomography and a narrowband light source makes the LSC length much shorter than the temporal coherence length, hence suggesting that high-resolution 3D images of biological and multilayered samples can be obtained based on the low LSC. A simplified model is derived, supported by experimental results, which describes the expected interference output signal of multilayered samples when high-NA lenses are used together with a narrowband light source. An expression for the correction factor for the layer thickness determination is found valid for high-NA objectives. Additionally, the method was applied to a strongly scattering layer, demonstrating the potential of this method for high-resolution imaging of scattering media.

    Original languageAmerican English
    Pages (from-to)3021-3027
    Number of pages7
    JournalAPPLIED OPTICS
    Volume50
    Issue number18
    DOIs
    StatePublished - 20 Jun 2011

    All Science Journal Classification (ASJC) codes

    • Atomic and Molecular Physics, and Optics
    • Engineering (miscellaneous)
    • Electrical and Electronic Engineering

    Fingerprint

    Dive into the research topics of 'Spatial coherence effect on layer thickness determination in narrowband full-field optical coherence tomography'. Together they form a unique fingerprint.

    Cite this