Academic literature on the topic 'Circular caustic; Gaussian beams'

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Journal articles on the topic "Circular caustic; Gaussian beams"

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Alexandrov, A., V. Zhdanov, and A. Kuybarov. "Gravitational microlensing of an elliptical source near a fold caustic." Bulletin of Taras Shevchenko National University of Kyiv. Astronomy, no. 57 (2018): 10–15. http://dx.doi.org/10.17721/btsnua.2018.57.10-15.

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We consider the amplification factor for the luminosity of an extended source near the fold caustic of the gravitational lens. It is assumed that the source has elliptical shape, and the brightness distribution along the radial directions is Gaussian. During the microlensing event the total brightness of all microimages is observed, which changes when the source moves relative to the caustic. The main contribution to the variable component is given by the so-called critical images that arise/disappear at the intersection of the caustic by the source. In the present paper we obtained an analogo
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Lamsoudi, Redouane. "Parametric Characterization of Truncated Circular Flattened Gaussian Beams." American Journal of Optics and Photonics 3, no. 1 (2015): 1. http://dx.doi.org/10.11648/j.ajop.20150301.11.

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Zhou, G., and X. Chu. "Analytic vectorial structure of circular flattened Gaussian beams." Applied Physics B 102, no. 1 (2010): 215–24. http://dx.doi.org/10.1007/s00340-010-4156-x.

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Liu Pu-Sheng and Lü Bai-Da. "Nonparaxial vector Gaussian beams diffracted at a circular screen." Acta Physica Sinica 53, no. 11 (2004): 3724. http://dx.doi.org/10.7498/aps.53.3724.

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Zheng, Chongwei, Yaoju Zhang, and Ling Wang. "Propagation of vectorial Gaussian beams behind a circular aperture." Optics & Laser Technology 39, no. 3 (2007): 598–604. http://dx.doi.org/10.1016/j.optlastec.2005.10.003.

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Chen, Xingyu, Dongmei Deng, Jingli Zhuang, Xiangbo Yang, Hongzhan Liu, and Guanghui Wang. "Nonparaxial propagation of abruptly autofocusing circular Pearcey Gaussian beams." Applied Optics 57, no. 28 (2018): 8418. http://dx.doi.org/10.1364/ao.57.008418.

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Campbell, Charles. "Fresnel Diffraction Of Gaussian Laser Beams By Circular Apertures." Optical Engineering 26, no. 3 (1987): 263270. http://dx.doi.org/10.1117/12.7974061.

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Barnes, Norman P., and Peter J. Walsh. "Loss of Gaussian beams through off-axis circular apertures." Applied Optics 27, no. 7 (1988): 1230. http://dx.doi.org/10.1364/ao.27.001230.

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Cherif, Sabah, Aicha Medjahed, and Ahmed Manallah. "Conversion of Laguerre–Gaussian beams into Gaussian beams of reduced focal spot by use of a circular echelon." Optik 127, no. 5 (2016): 3134–37. http://dx.doi.org/10.1016/j.ijleo.2015.12.035.

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Chen, Xingyu, Dongmei Deng, Guanghui Wang, Xiangbo Yang, and Hongzhan Liu. "Abruptly autofocused and rotated circular chirp Pearcey Gaussian vortex beams." Optics Letters 44, no. 4 (2019): 955. http://dx.doi.org/10.1364/ol.44.000955.

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Dissertations / Theses on the topic "Circular caustic; Gaussian beams"

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Lawry, James Milson Hassall. "Complex ray theory." Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.389022.

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Alameer, Maryam. "Polarization Dependent Ablation of Diamond with Gaussian and Orbital Angular Momentum Laser Beams." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39850.

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The vectorial nature (polarization) of light plays a significant role in light-matter interaction that leads to a variety of optical devices. The polarization property of light has been exploited in imaging, metrology, data storage, optical communication and also extended to biological studies. Most of the past studies fully explored and dealt with the conventional polarization state of light that has spatially symmetric electrical field geometry such as linear and circular polarization. Recently, researchers have been attracted to light whose electric field vector varies in space, the s
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Chung, Wei-Hung, and 鍾威宏. "Acoustic Reflection and Transmission of Gaussian Beams from Fluid Coupled Laminates and Circular Cylindrical Shells." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/27267289614945793271.

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碩士<br>國立交通大學<br>機械工程系<br>89<br>This thesis presents an analysis of acoustic wave propagation across layered cylindrical structures that are immersed in fluids and obliquely insonified by acoustic Gaussian beams from the concave side. The acoustic nonspecular reflection is due to the interference of geometric reflection and leaky guided waves. Contrast to the ealier studies assuming that incident rays are all parallel to the central beam axis. The acoustic Gaussian beam is modeled by the complex source point (CSP) method and angular spectrum. In the present method the beam is not limited wi
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Book chapters on the topic "Circular caustic; Gaussian beams"

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Freeman, Richard, James King, and Gregory Lafyatis. "Diffraction and the Propagation of Light." In Electromagnetic Radiation. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198726500.003.0012.

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Geometric optics is considered and the eikonal equation is introduced. Krirchoff’s diffraction theory is presented with his integral theorem. Rayleigh–Sommerfeld diffraction is discussed and Fresnel’s approximation for the Kirchoff integrals and Babinet’s principle are given. Fraunhoffer diffraction is considered in detail, specifically diffraction by a rectangular and circular aperture. Special emphasis is given to the angular spectrum representation and its applications, including Gaussian beams, Fourier optics, and tight focusing of fields. Finally, the fields and modes of a tightly focused Gaussian beam are considered and the diffraction limits on microscopy are given.
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Conference papers on the topic "Circular caustic; Gaussian beams"

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Acosta, E., Carlos C. Gomez-Reino, and R. M. Gonzalez. "Fresnel diffraction by circular aperture of Gaussian beams in gradient index media." In 15th Int'l Optics in Complex Sys. Garmisch, FRG, edited by F. Lanzl, H. J. Preuss, and G. Weigelt. SPIE, 1990. http://dx.doi.org/10.1117/12.22167.

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Cauffman, S. "Converting low-order circular electric modes to Gaussian beams in high-frequency gyrotrons." In 2009 IEEE International Vacuum Electronics Conference (IVEC). IEEE, 2009. http://dx.doi.org/10.1109/ivelec.2009.5193603.

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