2022/10/14 by Ye-Ryoung Lee, Dongyoung Kim, Lee, Ye-Ryoung +7 · 1 citation
Engineering · Physics and Astronomy · #Advanced Optical Sensing Technologies #Biological Physics (physics.bio-ph) #FOS: Physical sciences #Optics (physics.optics) #Photoacoustic and Ultrasonic Imaging #Random lasers and scattering media
paper · pdf · doi:10.48550/arxiv.2210.07462
openalex publication_date 2022/10/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Imaging an object embedded within a scattering medium requires the correction of complex sample-induced wave distortions. Existing approaches have been designed to resolve them by optimizing signal waves recorded in each 2D image. Here, we present a volumetric image reconstruction framework that merges two fundamental degrees of freedom, the wavelength and propagation angles of light waves, based on the object momentum conservation principle. On this basis, we propose methods for exploiting the correlation of signal waves from volumetric images to better cope with multiple scattering. By constructing experimental systems scanning both wavelength and illumination angle of the light source, we demonstrated a 32-fold increase in the use of signal waves compared with that of existing 2D-based approaches and achieved ultrahigh volumetric resolution (lateral resolution: 0.41 um, axial resolution: 0.60 um) even within complex scattering medium owing to the optimal coherent use of the extremely broad spectral bandwidth (225 nm).