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New paper in Optics & Laser in Engineering about a digital microscope with programmable Fourier transform filtering


olenWe published a new paper in the journal Optica & Lasers in Engineering about a digital microscope with programmable Fourier transform filtering. The paper is entitled Microscope system with on axis programmable Fourier transform filtering and was developed by Jose Luis Martínez, Pascuala Garcia and Ignacio Moreno.

In this work we demostrate such opto-digital filtering on-axis, taking advantage of phase and polarization modulation of a LCOS-display. We use a Hamamatsu SLM,free of flickering, which can be tuned to fully eliminate the zero order component of the encoded diffractive filter, therefore making use of the full space-bandwidth. The system is  demonstrated by implementing different optical processing operations based on phase-only gratings such as phase-contrast, band-pass filtering, or additive and subtractive imaging. A simple Differential Interference Contrast(DIC) imaging is also obtained changing to a polarization modulation scheme.

A proposal related to this work was selected as finalist on the 2016 Educational Award by Edmund Optics.


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Domingo, 8 de enero de 2017 Dejar un comentario Ir a comentarios
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