Analytical Fresnel imaging models for photon sieves

Figen S. Oktem, Farzad Kamalabadi, Joseph M. Davila

Research output: Contribution to journalArticle

Abstract

Photon sieves are a fairly new class of diffractive lenses that open unprecedented possibilities for high resolution imaging and spectroscopy, especially at short wavelengths such as UV and x-rays. In this paper, we model and analyze the image formation process of photon sieves using Fourier optics. We derive closed-form Fresnel imaging models that relate an input object to the image formed by a photon sieve system, both for coherent and incoherent illumination. These analytical models also provide a closed-form expression for the point-spread function of the system for both in-focus and out-of-focus cases. All the formulas are expressed in terms of Fourier transforms and convolutions, which enable easy interpretation as well as fast computation. The derived analytical models provide a unified framework to effectively develop new imaging modalities enabled by diffractive lenses and analyze their imaging capabilities for different design configurations, prior to physical production. To illustrate their utility and versatility, the derived formulas are applied to several important special cases such as photon sieves with circular holes and pixelated diffractive lenses generated by SLM-type devices. The analytical image formation models presented in this paper provide a generalizable and powerful means for effective analysis and simulation of any imaging system with a diffractive lens, including Fresnel zone plates, Fresnel phase plates, and other modified Fresnel lenses and mask-like patterns such as coded apertures.

Original languageEnglish (US)
Pages (from-to)32259-32279
Number of pages21
JournalOptics Express
Volume26
Issue number24
DOIs
StatePublished - Nov 26 2018

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sieves
photons
Fresnel lenses
lenses
versatility
point spread functions
convolution integrals
masks
apertures
illumination
optics
high resolution
configurations
wavelengths
spectroscopy
x rays
simulation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Analytical Fresnel imaging models for photon sieves. / Oktem, Figen S.; Kamalabadi, Farzad; Davila, Joseph M.

In: Optics Express, Vol. 26, No. 24, 26.11.2018, p. 32259-32279.

Research output: Contribution to journalArticle

Oktem, Figen S. ; Kamalabadi, Farzad ; Davila, Joseph M. / Analytical Fresnel imaging models for photon sieves. In: Optics Express. 2018 ; Vol. 26, No. 24. pp. 32259-32279.
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