Resolution-enhanced OCT and expanded framework of information capacity and resolution in coherent imaging.

ABSTRACT: Spatial resolution in conventional optical microscopy has traditionally been treated as a fixed parameter of the optical system. Here, we present an approach to enhance transverse resolution in beam-scanned optical coherence tomography (OCT) beyond its aberration-free resolution limit, without any modification to the optical system. Based on the theorem of invariance of information capacity, resolution-enhanced (RE)-OCT navigates the exchange of information between resolution and signal-to-noise ratio (SNR) by exploiting efficient noise suppression via coherent averaging and a simple computational bandwidth expansion procedure. We demonstrate a resolution enhancement of 1.5 × relative to the aberration-free limit while maintaining comparable SNR in silicone phantom. We show that RE-OCT can

SUBMITTER: Leartprapun N 

PROVIDER: S-EPMC8521598 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature