Work

Simultaneous three-wavelength unwrapping using external digital holographic multiplexing module

Year: 2018

Type: article

Abstract: We present an external interferometric setup that is able to simultaneously acquire three wavelengths of the same sample instance without scanning or multiple exposures. This setup projects onto the monochrome digital camera three off-axis holograms with rotated fringe orientations, each from a different wavelength channel, without overlap in the spatial-frequency domain, and thus allows the full reconstruction of the three complex wavefronts from the three wavelength channels. We use this new setup for three-wavelength phase unwrapping, allowing phase imaging of thicker objects than possible with a single wavelength, but without the increased level of noise. We demonstrate the proposed technique for micro-channel profiling and label-free cell imaging.

Source: Optics Letters

DOI: 10.1364/ol.43.001943

Authors: Nir A. Turko, Pinkie Jacob Eravuchira, Itay Barnea, Natan T. Shaked

Institution: Tel Aviv University

Language: English

Topic: Digital Holography and Microscopy

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: H2020 European Research Council

Award: Hybrid Optical Interferometry for Quantitative Cancer Cell Diagnosis