Noise reduction in supercontinuum sources for OCT by single-pulse spectral normalization

Appl Opt. 2020 Jun 20;59(18):5521-5526. doi: 10.1364/ao.393141. Epub 2020 Jun 16.

Abstract

Supercontinuum (SC) sources offer high illumination power from a single mode fiber with large spectral bandwidth including the visible spectrum, a growing application area for Optical Coherence Tomography (OCT). However, SC spectra suffer from pulse-to-pulse variations, increasing noise in the resulting images. By simultaneously collecting a normalization spectrum, OCT image noise can be reduced by more than half (7 dB) for single pulses without any pulse averaging using only simple optical components.

Keywords: (110.4280) Imaging Systems, Noise in imaging systems; (110.4500) Imaging Systems, Optical coherence tomography.