Improving axial resolution of asymmetrically apodised optical systems with two dimensional complex pupil filters

Full width at half maximum (FWHM) of an asymmetric apodised point spread function has been investigated by introducing asymmetric phase and amplitude pupil functions. For various amount of amplitude apodization, we have observed that as semi-circular ring width increases half maximum area also incre...

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Published in:Journal of optics (New Delhi) 2016-06, Vol.45 (2), p.186-189
Main Authors: Andra, Naresh Kumar Reddy, Rajanala, Komala, Keshavulu Goud, M., Dasari, Karuna Sagar
Format: Article
Language:English
Subjects:
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Research Article
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container_title Journal of optics (New Delhi)
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creator Andra, Naresh Kumar Reddy
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description Full width at half maximum (FWHM) of an asymmetric apodised point spread function has been investigated by introducing asymmetric phase and amplitude pupil functions. For various amount of amplitude apodization, we have observed that as semi-circular ring width increases half maximum area also increases and then decreases with semi-circular ring width is boosted by degree of amplitude apodization. We have evaluated a new quality criterion, half width at half maximum (HWHM) to discuss distribution of half maximum area on good and bad sides of asymmetric PSF from diffraction center. This criteria is useful to evaluate an optical system is suffering from large amount of aberrations when Rayleigh criterion is not applicable.
doi_str_mv 10.1007/s12596-015-0295-0
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subjects Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Research Article
title Improving axial resolution of asymmetrically apodised optical systems with two dimensional complex pupil filters
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