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Compromising of resolution and contrast in obstructed Cauchy aperture and its application in confocal microscopy

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Abstract

We designed an obstructed Cauchy filter to improve the microscope resolution, and we calculated the point spread function (PSF) considering the Fourier transform operation deduced from the known Fraunhofer diffraction. Then, we computed the coherent transfer function (CTF) from the autocorrelation of the modulated Cauchy aperture. We applied the modulated Cauchy pupils to a confocal scanning laser microscope (CSLM) and examined the obtained images. We compared the images with the case of uniform circular apertures. We used the MATLAB code to make all the images and plots.

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No data associated with the manuscript.

Abbreviations

PSF:

Point spread function

FFT:

Fast Fourier transformation

CTF:

Coherent Transfer Function

CSLM:

Confocal Scanning Laser Microscope

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  1. Physics Department, Faculty Science, Ain Shams University, Cairo, 11566, Egypt

    A. M. Hamed

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  1. A. M. Hamed
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Hamed, A.M. Compromising of resolution and contrast in obstructed Cauchy aperture and its application in confocal microscopy. Opt Quant Electron 55, 1278 (2023). https://doi.org/10.1007/s11082-023-05507-z

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