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On a propagation-invariant, orthogonal modal expansion on the unit disk: going beyond Nijboer-Zernike theory of aberrations.

Optics letters

El Gawhary O.
PMID: 26030574
Opt Lett. 2015 Jun 01;40(11):2626-9. doi: 10.1364/OL.40.002626.

Nijboer-Zernike's circle polynomials are broadly used for the evaluation of aberrations of optical systems or, more generally, wavefront analysis. This is because they are orthogonal over a unit circle and are directly related to the balanced classical aberrations for...

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El Gawhary O. On a propagation-invariant, orthogonal modal expansion on the unit disk: going beyond Nijboer-Zernike theory of aberrations. Opt Lett. 2015;40(11):2626-9doi: 10.1364/OL.40.002626.
El Gawhary, O. (2015). On a propagation-invariant, orthogonal modal expansion on the unit disk: going beyond Nijboer-Zernike theory of aberrations. Optics letters, 40(11), 2626-9. https://doi.org/10.1364/OL.40.002626
El Gawhary, Omar. "On a propagation-invariant, orthogonal modal expansion on the unit disk: going beyond Nijboer-Zernike theory of aberrations." Optics letters vol. 40,11 (2015): 2626-9. doi: https://doi.org/10.1364/OL.40.002626
El Gawhary O. On a propagation-invariant, orthogonal modal expansion on the unit disk: going beyond Nijboer-Zernike theory of aberrations. Opt Lett. 2015 Jun 01;40(11):2626-9. doi: 10.1364/OL.40.002626. PMID: 26030574.
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Through-focus phase retrieval and its connection to the spatial correlation for propagating fields.

Optics express

El Gawhary O, Wiegmann A, Kumar N, Pereira SF, Urbach HP.
PMID: 23482126
Opt Express. 2013 Mar 11;21(5):5550-60. doi: 10.1364/OE.21.005550.

Through-focus phase retrieval methods aim to retrieve the phase of an optical field from its intensity distribution measured at different planes in the focal region. By using the concept of spatial correlation for propagating fields, for both the complex...

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El Gawhary O, Wiegmann A, Kumar N, et al. Through-focus phase retrieval and its connection to the spatial correlation for propagating fields. Opt Express. 2013;21(5):5550-60doi: 10.1364/OE.21.005550.
El Gawhary, O., Wiegmann, A., Kumar, N., Pereira, S. F., & Urbach, H. P. (2013). Through-focus phase retrieval and its connection to the spatial correlation for propagating fields. Optics express, 21(5), 5550-60. https://doi.org/10.1364/OE.21.005550
El Gawhary, O, et al. "Through-focus phase retrieval and its connection to the spatial correlation for propagating fields." Optics express vol. 21,5 (2013): 5550-60. doi: https://doi.org/10.1364/OE.21.005550
El Gawhary O, Wiegmann A, Kumar N, Pereira SF, Urbach HP. Through-focus phase retrieval and its connection to the spatial correlation for propagating fields. Opt Express. 2013 Mar 11;21(5):5550-60. doi: 10.1364/OE.21.005550. PMID: 23482126.
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Comment on "Quality of paraxial electromagnetic beams".

Applied optics

El Gawhary O, Severini S.
PMID: 18641742
Appl Opt. 2008 Jul 20;47(21):3767-9; discussion 3770-2. doi: 10.1364/ao.47.003767.

We comment on a recent paper by Seshadri [Appl. Opt.45, 5335 (2006)]APOPAI0003-693510.1364/AO.45.005335. In the cited work the author utilized the so-named Felsen method in order to derive the full wave expression of a scalar Bessel-Gauss field, propagating in free...

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El Gawhary O, Severini S. Comment on "Quality of paraxial electromagnetic beams". Appl Opt. 2008;47(21):3767-9; discussion 3770-2doi: 10.1364/ao.47.003767.
El Gawhary, O., & Severini, S. (2008). Comment on "Quality of paraxial electromagnetic beams". Applied optics, 47(21), 3767-9; discussion 3770-2. https://doi.org/10.1364/ao.47.003767
El Gawhary, Omar, and Severini, Sergio. "Comment on "Quality of paraxial electromagnetic beams"." Applied optics vol. 47,21 (2008): 3767-9; discussion 3770-2. doi: https://doi.org/10.1364/ao.47.003767
El Gawhary O, Severini S. Comment on "Quality of paraxial electromagnetic beams". Appl Opt. 2008 Jul 20;47(21):3767-9; discussion 3770-2. doi: 10.1364/ao.47.003767. PMID: 18641742.
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Initial Experience With Single-Isocenter Radiosurgery to Target Multiple Brain Metastases Using an Automated Treatment Planning Software: Clinical Outcomes and Optimal Target Volume Margins Strategy.

Advances in radiation oncology

Minniti G, Capone L, Alongi F, Figlia V, Nardiello B, El Gawhary R, Scaringi C, Bianciardi F, Tolu B, Gentile P, Paolini S.
PMID: 33083647
Adv Radiat Oncol. 2020 Jul 14;5(5):856-864. doi: 10.1016/j.adro.2020.06.008. eCollection 2020.

PURPOSE: Our purpose was to assess the clinical outcomes and target positioning accuracy of frameless linear accelerator single-isocenter multiple-target (SIMT) dynamic conformal arc (DCA) stereotactic radiosurgery (SRS) for multiple brain metastases (BM).METHODS AND MATERIALS: Between October 2016 and September...

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Minniti G, Capone L, Alongi F, et al. Initial Experience With Single-Isocenter Radiosurgery to Target Multiple Brain Metastases Using an Automated Treatment Planning Software: Clinical Outcomes and Optimal Target Volume Margins Strategy. Adv Radiat Oncol. 2020;5(5):856-864doi: 10.1016/j.adro.2020.06.008.
Minniti, G., Capone, L., Alongi, F., Figlia, V., Nardiello, B., El Gawhary, R., Scaringi, C., Bianciardi, F., Tolu, B., Gentile, P., & Paolini, S. (2020). Initial Experience With Single-Isocenter Radiosurgery to Target Multiple Brain Metastases Using an Automated Treatment Planning Software: Clinical Outcomes and Optimal Target Volume Margins Strategy. Advances in radiation oncology, 5(5), 856-864. https://doi.org/10.1016/j.adro.2020.06.008
Minniti, Giuseppe, et al. "Initial Experience With Single-Isocenter Radiosurgery to Target Multiple Brain Metastases Using an Automated Treatment Planning Software: Clinical Outcomes and Optimal Target Volume Margins Strategy." Advances in radiation oncology vol. 5,5 (2020): 856-864. doi: https://doi.org/10.1016/j.adro.2020.06.008
Minniti G, Capone L, Alongi F, Figlia V, Nardiello B, El Gawhary R, Scaringi C, Bianciardi F, Tolu B, Gentile P, Paolini S. Initial Experience With Single-Isocenter Radiosurgery to Target Multiple Brain Metastases Using an Automated Treatment Planning Software: Clinical Outcomes and Optimal Target Volume Margins Strategy. Adv Radiat Oncol. 2020 Jul 14;5(5):856-864. doi: 10.1016/j.adro.2020.06.008. eCollection 2020. PMID: 33083647; PMCID: PMC7557192.
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Reconstruction of sub-wavelength features and nano-positioning of gratings using coherent Fourier scatterometry.

Optics express

Kumar N, Petrik P, Ramanandan GK, El Gawhary O, Roy S, Pereira SF, Coene WM, Urbach HP.
PMID: 25322042
Opt Express. 2014 Oct 06;22(20):24678-88. doi: 10.1364/OE.22.024678.

Optical scatterometry is the state of art optical inspection technique for quality control in lithographic process. As such, any boost in its performance carries very relevant potential in semiconductor industry. Recently we have shown that coherent Fourier scatterometry (CFS)...

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Kumar N, Petrik P, Ramanandan GK, et al. Reconstruction of sub-wavelength features and nano-positioning of gratings using coherent Fourier scatterometry. Opt Express. 2014;22(20):24678-88doi: 10.1364/OE.22.024678.
Kumar, N., Petrik, P., Ramanandan, G. K., El Gawhary, O., Roy, S., Pereira, S. F., Coene, W. M., & Urbach, H. P. (2014). Reconstruction of sub-wavelength features and nano-positioning of gratings using coherent Fourier scatterometry. Optics express, 22(20), 24678-88. https://doi.org/10.1364/OE.22.024678
Kumar, Nitish, et al. "Reconstruction of sub-wavelength features and nano-positioning of gratings using coherent Fourier scatterometry." Optics express vol. 22,20 (2014): 24678-88. doi: https://doi.org/10.1364/OE.22.024678
Kumar N, Petrik P, Ramanandan GK, El Gawhary O, Roy S, Pereira SF, Coene WM, Urbach HP. Reconstruction of sub-wavelength features and nano-positioning of gratings using coherent Fourier scatterometry. Opt Express. 2014 Oct 06;22(20):24678-88. doi: 10.1364/OE.22.024678. PMID: 25322042.
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Nonlinearity characterization of array spectroradiometers for the solar UV measurements.

Applied optics

Pulli T, Nevas S, El Gawhary O, van den Berg S, Askola J, Kärhä P, Manoocheri F, Ikonen E.
PMID: 28414366
Appl Opt. 2017 Apr 10;56(11):3077-3086. doi: 10.1364/AO.56.003077.

Array spectroradiometers are attractive alternatives to scanning spectroradiometers in solar ultraviolet measurements. However, the measurement of solar spectral irradiance imposes stringent requirements for the linearity of the instruments. In this article, two array spectroradiometers were characterized for nonlinearity. Significant...

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Pulli T, Nevas S, El Gawhary O, et al. Nonlinearity characterization of array spectroradiometers for the solar UV measurements. Appl Opt. 2017;56(11):3077-3086doi: 10.1364/AO.56.003077.
Pulli, T., Nevas, S., El Gawhary, O., van den Berg, S., Askola, J., Kärhä, P., Manoocheri, F., & Ikonen, E. (2017). Nonlinearity characterization of array spectroradiometers for the solar UV measurements. Applied optics, 56(11), 3077-3086. https://doi.org/10.1364/AO.56.003077
Pulli, Tomi, et al. "Nonlinearity characterization of array spectroradiometers for the solar UV measurements." Applied optics vol. 56,11 (2017): 3077-3086. doi: https://doi.org/10.1364/AO.56.003077
Pulli T, Nevas S, El Gawhary O, van den Berg S, Askola J, Kärhä P, Manoocheri F, Ikonen E. Nonlinearity characterization of array spectroradiometers for the solar UV measurements. Appl Opt. 2017 Apr 10;56(11):3077-3086. doi: 10.1364/AO.56.003077. PMID: 28414366.
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Dependence of the degree of paraxiality on field correlations.

Optics letters

El Gawhary O, Severini S.
PMID: 18709115
Opt Lett. 2008 Aug 15;33(16):1866-8. doi: 10.1364/ol.33.001866.

A linearly polarized optical field can be obtained by filtering a stochastic field through an ideal linear polarizer. The produced field possesses a given degree of paraxiality that, as proved in the present Letter, can be affected by the...

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El Gawhary O, Severini S. Dependence of the degree of paraxiality on field correlations. Opt Lett. 2008;33(16):1866-8doi: 10.1364/ol.33.001866.
El Gawhary, O., & Severini, S. (2008). Dependence of the degree of paraxiality on field correlations. Optics letters, 33(16), 1866-8. https://doi.org/10.1364/ol.33.001866
El Gawhary, Omar, and Severini, Sergio. "Dependence of the degree of paraxiality on field correlations." Optics letters vol. 33,16 (2008): 1866-8. doi: https://doi.org/10.1364/ol.33.001866
El Gawhary O, Severini S. Dependence of the degree of paraxiality on field correlations. Opt Lett. 2008 Aug 15;33(16):1866-8. doi: 10.1364/ol.33.001866. PMID: 18709115.
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On the nonparaxial corrections of Bessel-Gauss beams.

Journal of the Optical Society of America. A, Optics, image science, and vision

El Gawhary O, Severini S.
PMID: 20208935
J Opt Soc Am A Opt Image Sci Vis. 2010 Mar 01;27(3):458-60. doi: 10.1364/JOSAA.27.000458.

The nonparaxial corrections for Bessel-Gauss beams were derived recently using two different approaches [Borghi et al., J. Opt. Soc. Am. A 18, 1618 (2001) and Vaveliuk et al., J. Opt. Soc. Am. A 24, 3297 (2007)]. However, the two...

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El Gawhary O, Severini S. On the nonparaxial corrections of Bessel-Gauss beams. J Opt Soc Am A Opt Image Sci Vis. 2010;27(3):458-60doi: 10.1364/JOSAA.27.000458.
El Gawhary, O., & Severini, S. (2010). On the nonparaxial corrections of Bessel-Gauss beams. Journal of the Optical Society of America. A, Optics, image science, and vision, 27(3), 458-60. https://doi.org/10.1364/JOSAA.27.000458
El Gawhary, Omar, and Severini, Sergio. "On the nonparaxial corrections of Bessel-Gauss beams." Journal of the Optical Society of America. A, Optics, image science, and vision vol. 27,3 (2010): 458-60. doi: https://doi.org/10.1364/JOSAA.27.000458
El Gawhary O, Severini S. On the nonparaxial corrections of Bessel-Gauss beams. J Opt Soc Am A Opt Image Sci Vis. 2010 Mar 01;27(3):458-60. doi: 10.1364/JOSAA.27.000458. PMID: 20208935.
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Correction to: Vitamin D status and vitamin D receptor gene polymorphism in Saudi children with acute lower respiratory tract infection.

Molecular biology reports

Mansy W, Ibrahim NH, Al-Gawhary S, Alsubaie SS, Abouelkheir MM, Fatani A, Abd Al Reheem F, El Awady H, Zakaria EA.
PMID: 31093873
Mol Biol Rep. 2019 Oct;46(5):5669. doi: 10.1007/s11033-019-04849-w.

The correct affiliations for all authors are as given below.

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Mansy W, Ibrahim NH, Al-Gawhary S, et al. Correction to: Vitamin D status and vitamin D receptor gene polymorphism in Saudi children with acute lower respiratory tract infection. Mol Biol Rep. 2019;46(5):5669doi: 10.1007/s11033-019-04849-w.
Mansy, W., Ibrahim, N. H., Al-Gawhary, S., Alsubaie, S. S., Abouelkheir, M. M., Fatani, A., Abd Al Reheem, F., El Awady, H., & Zakaria, E. A. (2019). Correction to: Vitamin D status and vitamin D receptor gene polymorphism in Saudi children with acute lower respiratory tract infection. Molecular biology reports, 46(5), 5669. https://doi.org/10.1007/s11033-019-04849-w
Mansy, Wael, et al. "Correction to: Vitamin D status and vitamin D receptor gene polymorphism in Saudi children with acute lower respiratory tract infection." Molecular biology reports vol. 46,5 (2019): 5669. doi: https://doi.org/10.1007/s11033-019-04849-w
Mansy W, Ibrahim NH, Al-Gawhary S, Alsubaie SS, Abouelkheir MM, Fatani A, Abd Al Reheem F, El Awady H, Zakaria EA. Correction to: Vitamin D status and vitamin D receptor gene polymorphism in Saudi children with acute lower respiratory tract infection. Mol Biol Rep. 2019 Oct;46(5):5669. doi: 10.1007/s11033-019-04849-w. PMID: 31093873.
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Showing 1 to 9 of 9 entries