Spiral phase contrast imaging in microscopy

Discontinued Devices LC-R 3000 Spatial Light Modulators
Imaging/ Image Processing Microscopy
Published on:
Authors: Severin Fürhapter, Alexander Jesacher, Stefan Bernet, and Monika Ritsch-Marte
Abstract:

“We demonstrate an optical method for edge contrast enhancement in light microscopy. The method is based on holographic Fourier plane filtering of the microscopic image with a spiral phase element (also called vortex phase or helical phase filter) displayed as an off-axis hologram at a computer controlled high resolution spatial light modulator (SLM) in the optical imaging pathway. The phase hologram imprints a helical phase term of the form exp(i ??) on the diffracted light field in its Fourier plane. In the image plane, this results in a strong and isotropic edge contrast enhancement for both amplitude and phase objects.”

Open Access

Publication: Optics Express
Issue/Year: Optics Express, Vol. 13, Issue 3, pp. 689-694, 2005
DOI: 10.1364/OPEX.13.000689
Link: https://doi.org/10.1364/OPEX.13.000689

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