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In this study we demonstrated the effectiveness of dynamic light scattering (DLS) in enhancing the resolution of optical coherence tomography (OCT) images of static samples. By carefully analyzing the movement of particles within the sample, utilizing the autocorrelation function of the backscattered light and performing averaging of OCT images captured at different time points, we were able to effectively suppress spatial coherence and achieve improved transverse resolution in the images. Additionally, this technique holds the potential for providing valuable insights into the internal movements of biological samples, such as blood flow. To validate our method, we conducted experiments using an OCT system and introduced scatterers exhibiting random Brownian motion. The enhanced spatial resolution was clearly demonstrated through the visualization of cross-sections of bars and the analysis of B-scans. Our findings pave the way for further advancements in OCT imaging techniques and offer promising applications in the study of static biological samples.
Nowacka et al. (Wed,) studied this question.