Wavelengths encoded illumination for resolution enhancement and imaging beyond scattering medium

Omer Wagner; Asaf Shahmoon; Zeev Zalevsky

doi:10.1117/12.2649518

16 March 2023 Wavelengths encoded illumination for resolution enhancement and imaging beyond scattering medium

Omer Wagner, Asaf Shahmoon, Zeev Zalevsky

Proceedings Volume 12394, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XX; 1239402 (2023) https://doi.org/10.1117/12.2649518
Event: SPIE BiOS, 2023, San Francisco, California, United States

Abstract

In this paper a wavelength-multiplexing based super-resolving concept is presented to allow high resolution imaging through blood. We use temporally pulsed and spectrally wide-band laser while at its output we have special grating and a spatial 2-D transmission mask allowing to project wavelengths’ dependent high-resolution spatial orthogonal encoding patterns (different spatial patterns for each wavelength). The ballistic photons of the short temporal pulses allow the high-resolution encoding pattern to reach the inspected object through the scattering blood medium without being spatially blurred. The light is intentionally collected via low resolution optics. The high-resolution reconstruction can be obtained digitally by post processing or optically by passing the collected low-resolution data through a similar grating and 2-D mask which do an all-optical decoding. After summing all the images together, the super-resolved reconstruction through the highly scattering blood medium is formed.

Conference Presentation

Citation Download Citation

Omer Wagner, Asaf Shahmoon, and Zeev Zalevsky "Wavelengths encoded illumination for resolution enhancement and imaging beyond scattering medium", Proc. SPIE 12394, Nanoscale Imaging, Sensing, and Actuation for Biomedical Applications XX, 1239402 (16 March 2023); https://doi.org/10.1117/12.2649518

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