Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Rasoul Aalipour"'
Autor:
Maryam Farahiyan, Rasoul Aalipour
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-10 (2024)
Abstract This research examines, using both theory and experimentation, how a light beam’s spatial coherence affects a sinusoidal linear Fresnel zone plate’s depth of focus. We generate a one-dimensional partially coherent Gaussian Schell-model b
Externí odkaz:
https://doaj.org/article/e797aaf3fd63409a8217c40af19a9508
Publikováno v:
Applied Physics B. 127
In this paper, we use Fresnel diffraction from a phase step in transmission to measure the diffusion coefficient in a transparent liquid. A transparent glass plate immersed vertically in a cell containing two diffusing liquids makes a phase step in t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cf162d6883106e5a73918f0730c7805
https://doi.org/10.1007/s00340-021-07655-0
https://doi.org/10.1007/s00340-021-07655-0
Autor:
Rasoul Aalipour
Publikováno v:
Optics Communications. 382:651-655
When a part of an optical wave-front experiences a sharp change in its phase, Fresnel diffraction becomes appreciable. Sharp change in phase occurs as a wave-front strikes with a phase step. The intensity distributions of diffraction patterns of the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5d8836e84ccf147aa6d292f5c35fb7c4
https://doi.org/10.1016/j.optcom.2016.08.031
https://doi.org/10.1016/j.optcom.2016.08.031
Publikováno v:
Applied Optics. 59:7712
Measurement of the source size and specifying its effect on the spatial coherence of propagating light are important for characterizing distant sources such as stars, and imaging with partially coherent light. The common method for measuring spatial
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5877ef6eb891b401a799e08bd7a88b40
https://doi.org/10.1364/ao.397748
https://doi.org/10.1364/ao.397748
Autor:
Shahram Esmaeilie, Rasoul Aalipour
Publikováno v:
2017 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments.
When a part of an optical wave-front experiences a sharp change in its phase, Fresnel diffraction becomes appreciable. Sharp change in phase occurs as a wave-front reflects from a surface with an abrupt change in reflectivity. We apply this concept t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3f9bb8213f351363aa7a66ffeb4696d2
https://doi.org/10.1117/12.2295360
https://doi.org/10.1117/12.2295360
Autor:
M. Taghi Tavassoly, Rasoul Aalipour
Publikováno v:
Optics Communications. 294:13-16
It is shown that when a coherent beam of light illuminates a Fresnel's double mirror, Fresnel diffraction becomes appreciable. The subject fundamentally differs from interference. We calculate the diffracted field by applying Fresnel–Kirchhoff inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6333ce3cc1f341b01f759e79b1f1e48
https://doi.org/10.1016/j.optcom.2012.11.062
https://doi.org/10.1016/j.optcom.2012.11.062
Autor:
Rasoul Aalipour
Publikováno v:
Physical Review A. 90
Spectral singularities are spectral points of non-Hermitian Hamiltonians with the real energies, that annihilate the completeness of the eigenfunctions. The complex $\mathcal{P}\mathcal{T}$-symmetric potentials with real spectrum have such Hamiltonia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6477957f3faff16e445a721afab8a82
https://doi.org/10.1103/physreva.90.013820
https://doi.org/10.1103/physreva.90.013820
Autor:
Rasoul Aalipour, Mohammad Aminjafari
Publikováno v:
Journal of Optics. 14:125706
When a transparent plane-parallel plate is illuminated at a boundary region by a parallel monochromatic beam of light, Fresnel diffraction occurs because of the abrupt change in phase imposed by the finite change in refractive index at the plate boun
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4376ce95573b9543f06c4002d2c2f8f5
https://doi.org/10.1088/2040-8978/14/12/125706
https://doi.org/10.1088/2040-8978/14/12/125706
Publikováno v:
Applied Optics. 49:3768
When two similar small objects that are installed in the arms of a Mach-Zehnder interferometer are illuminated in such a way that the image of one object in the second beam splitter is located on the other object, the diffracted waves from the object
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::793b28fdb9c7324d17fa81c129752459
https://doi.org/10.1364/ao.49.003768
https://doi.org/10.1364/ao.49.003768
Autor:
M. Taghi Tavassoly, Mohammad Amiri, Ahmad Darudi, Rasoul Aalipour, Ahad Saber, Ali-Reza Moradi
Publikováno v:
Journal of the Optical Society of America A. 26:540
Interference of light has numerous metrological applications because the optical path difference (OPD) can be varied at will between the interfering waves in the interferometers. We show how one can desirably change the optical path difference in dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02ccb21c26ceb4eef80b8f8eb0ada19d
https://doi.org/10.1364/josaa.26.000540
https://doi.org/10.1364/josaa.26.000540