Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Sami A. Shakir"'
Publikováno v:
Pakistan Heart Journal. 55:S29
Objectives: Although improvements seen in mortality during the last four decades, Coronary Artery Disease (or Ischemic Heart Disease) remains to be the first & foremost cause of death among adults in United States, rising the toll of death to one-thi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34c9f5cabe0d061349ea2fc218905ca8
https://doi.org/10.47144/phj.v55isupplement1.2445
https://doi.org/10.47144/phj.v55isupplement1.2445
Publikováno v:
Unconventional Imaging and Adaptive Optics 2020.
Three-dimensional (3D) remote imaging may improve target characterization and help improve tracking and aim-point maintenance. Digital holography (DH) has been shown to be very effective in generating 3D images of objects using frequency diversity. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4f66941e7c85c50cb6c2865907e9a16c
https://doi.org/10.1117/12.2570395
https://doi.org/10.1117/12.2570395
Publikováno v:
Applied Optics. 60:G1
This paper conducts experiments that demonstrate the utility of a general scaling law (GSL) for far-field propagation. In practice, the GSL accurately predicts the diffraction-limited peak irradiance in a far-field plane, regardless of the beam shape
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dff818518bc7ebd90305ea7ceb1fdfdf
https://doi.org/10.1364/ao.419596
https://doi.org/10.1364/ao.419596
Autor:
Sami A. Shakir, Mark F. Spencer, Richard A. Carreras, Thomas M. Dolash, Richard W. Berdine, Daniel S. Cargill
Publikováno v:
Journal of the Optical Society of America. A, Optics, image science, and vision. 33(12)
A general far-field wave propagation scaling law is developed. The formulation is simple but predicts diffraction peak irradiance accurately in the far field, regardless of the near-field beam type or geometry, including laser arrays. We also introdu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42a7fe2731c641ec491d86a602d225f3
https://pubmed.ncbi.nlm.nih.gov/27906274
https://pubmed.ncbi.nlm.nih.gov/27906274
Publikováno v:
Journal of Lightwave Technology. 30:4-8
A fast non-paraxial beam propagation method (BPM) is developed. Our method is based on expanding the field and the refractive index distributions in azimuthal harmonics, thus replacing a 3-D wave equation with a small number of 2-D wave equations. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30084e8ff566aecc4ee6cb6ad85cc900
https://doi.org/10.1109/jlt.2011.2176103
https://doi.org/10.1109/jlt.2011.2176103
Autor:
Ralf Deiterding, C A Miller, Sami A. Shakir, Pere Colet, Alejandro B. Aceves, Charles K. Rhodes, Adrian Jacobo, Erik J. Bochove, Yehuda Braiman
Publikováno v:
Digital.CSIC. Repositorio Institucional del CSIC
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instname
We present a simple model for self-pulsation instability in passively phased high power optical fiber amplifier arrays with external feedback. Its key features are, first, the feedback level's sensitivity, and thus that of the cavity Q-value, to smal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06061d8e33386c57fcc73f82a1caa8d5
https://doi.org/10.1109/jqe.2011.2112637
https://doi.org/10.1109/jqe.2011.2112637
Publikováno v:
IEEE Journal of Quantum Electronics. 47:486-491
The beam propagation method developed here is based on expanding the field and the refractive index distributions with a Fourier series in the azimuthal direction, thus replacing a 3-D wave equation with a small number of 2-D wave equations. The meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d60e148de22da167870383cc393b109
https://doi.org/10.1109/jqe.2010.2091395
https://doi.org/10.1109/jqe.2010.2091395
Publikováno v:
Optics Express. 26:15609
The irradiance of a partially coherent light propagated under the influence of multiple random effects is shown to be the convolution of the irradiance propagated in a vacuum with the system's point spread function representing the random effects. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed5e8be7e88397eb07ad5cf2af9bbe25
https://doi.org/10.1364/oe.26.015609
https://doi.org/10.1364/oe.26.015609
Autor:
E.J. Bochove, Sami A. Shakir
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 15:320-327
In this paper, a formulation of the cavity mode structure, loss, and beam quality of a ring-cavity fiber laser beam combining apparatus is developed, which shows that the resonator is rigorously single mode. The passive phasing property is clearly un
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d2f39b9a648045434054729139f7f7c
https://doi.org/10.1109/jstqe.2008.2011999
https://doi.org/10.1109/jstqe.2008.2011999
Publikováno v:
Optics express. 23(20)
The Fresnel diffraction integral form of optical wave propagation and the more general Linear Canonical Transforms (LCT) are cast into a matrix transformation form. Taking advantage of recent efficient matrix multiply algorithms, this approach promis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d7a1da6fdc7b70141ec19a0043ce184d
https://pubmed.ncbi.nlm.nih.gov/26480196
https://pubmed.ncbi.nlm.nih.gov/26480196