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Relevant bibliographies by topics / Numerical aperture

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Academic literature on the topic 'Numerical aperture'

Author: Grafiati

Published: 4 June 2021

Last updated: 9 February 2022

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Journal articles on the topic "Numerical aperture"

1

Moheb, H., J. Shaker, and L. Shafai. "Numerical and experimental investigation of cavity-backed arbitrary slot antennas." Canadian Journal of Physics 74, no. 3-4 (1996): 122–31. http://dx.doi.org/10.1139/p96-019.

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The equivalence principle and the generalized network formulation are used to model the tangential electric field on arbitrary apertures, backed by a rectangular wave guide or cavity, in terms of equivalent magnetic currents. The coupling is through the aperture whose characteristics are expressed by the aperture admittance matrices of the cavity and half-space regions. The aperture coupling is then expressed as the sum of the two independent aperture admittances, with source terms related to the incident field. The result is an integral equation for the unknown aperture current. This integral

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2

Qin, Zipeng, Gang Li, Yan Tian, Yuwei Ma, and Pengfei Shen. "Numerical Simulation of Thermal Conductivity of Foam Glass Based on the Steady-State Method." Materials 12, no. 1 (2018): 54. http://dx.doi.org/10.3390/ma12010054.

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The effects of fly ash, sodium carbonate content, foaming temperature and foaming time on foam glass aperture sizes and their distribution were analyzed by the orthogonal experimental design. Results from the steady-state method showed a normal distribution of the number of apertures with change in average aperture, which ranges from 0.1 to 2.0 mm for more than 93% of apertures. For a given porosity, the thermal conductivity decreases with the increase of the aperture size. The apertures in the sample have obvious effects in blocking the heat flow transmission: heat flow is quickly diverted to

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Tandler, H., L. Schreiber, U. Simon, and H. E. Keller. "Resolution in Light Microscopy." Microscopy and Microanalysis 3, S2 (1997): 1175–76. http://dx.doi.org/10.1017/s1431927600012769.

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The resolution in conventional light microscopy was defined by Abbe as: Wavelength (λ) and Numerical Aperture (NA) have a direct influence while the factor (c) is dependent upon the geometry of the illumination and observation beam paths. Some typical examples are:High illumination apertures in darkfield or oblique illumination or specific ratios between illumination and observation aperture can substantially improve resolution. Various shapes of the illumination aperture, annular, point, centered or off axis at different azimuths directly influence numerical aperture and coherence and with th

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Liu, Richeng, Yujing Jiang, Hongwen Jing, and Liyuan Yu. "Nonlinear Flow Characteristics of a System of Two Intersecting Fractures with Different Apertures." Processes 6, no. 7 (2018): 94. http://dx.doi.org/10.3390/pr6070094.

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The nonlinear flow regimes of a crossed fracture model consisting of two fractures have been investigated, in which the influences of hydraulic gradient, surface roughness, intersecting angle, and scale effect have been taken into account. However, in these attempts, the aperture of the two crossed fractures is the same and effects of aperture ratio have not been considered. This study aims to extend their works, characterizing nonlinear flow through a system of two intersecting fractures with different apertures. First, three experiment models with two fractures having different apertures wer

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Normatov, Alexander, Boris Spektor, and Joseph Shamir. "Analysis of Phase Distribution of Focused Light in High Numerical Aperture Systems." Key Engineering Materials 437 (May 2010): 616–20. http://dx.doi.org/10.4028/www.scientific.net/kem.437.616.

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High numerical aperture focusing is becoming increasingly important for nanotechnology related applications. Rigorous, vector evaluation of the focused field, in such cases, is usually performed using the Richards-Wolf method which is based on the Debye approach. The resulting field is known to have a piecewise quasi planar phase. A corresponding result, produced by a Fresnel-Kirchhoff integral for aplanatic optical systems of medium and low numerical apertures, leads to the well known physical fact that a quadratic phase exists when the entrance pupil is not located at the front focal plane.

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Benı́tez, Pablo, and Juan C. Miñano. "Ultrahigh-numerical-aperture imaging concentrator." Journal of the Optical Society of America A 14, no. 8 (1997): 1988. http://dx.doi.org/10.1364/josaa.14.001988.

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Singh, R. N., A. E. Rosenbluth, G. L. T. Chiu, and J. S. Wilczynski. "High-numerical-aperture optical designs." IBM Journal of Research and Development 41, no. 1.2 (1997): 39–48. http://dx.doi.org/10.1147/rd.411.0039.

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Liu, Yong-Qiang, Jinhai Sun, Yongxing Che, Kainan Qi, Liangsheng Li, and Hongcheng Yin. "High numerical aperture microwave metalens." Optics Letters 45, no. 22 (2020): 6262. http://dx.doi.org/10.1364/ol.412040.

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Gallatin, Gregg M. "High-numerical-aperture scalar imaging." Applied Optics 40, no. 28 (2001): 4958. http://dx.doi.org/10.1364/ao.40.004958.

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Wadsworth, W. J., R. M. Percival, G. Bouwmans, et al. "Very High Numerical Aperture Fibers." IEEE Photonics Technology Letters 16, no. 3 (2004): 843–45. http://dx.doi.org/10.1109/lpt.2004.823689.

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Dissertations / Theses on the topic "Numerical aperture"

1

Munro, Peter Robert Thomas. "Application of numerical methods to high numerical aperture imaging." Thesis, Imperial College London, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427816.

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Flagello, Donis George. "High numerical aperture imaging in homogeneous thin films." Diss., The University of Arizona, 1993. http://hdl.handle.net/10150/186395.

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This dissertation investigates imaging phenomena by lenses of high relative numerical aperture (NA) in the first layer of a homogeneous thin film stack. The imaging is described by a high NA model that combines elements of vector imaging theory with traditional thin-film optics. Various examples are studied with an emphasis on analyzing the polarization effects of the illumination. Experiments are shown that verify aspects of the model. A brief review of the development of high NA imaging theory is given. The use of the Debye approximation dominates most of the previous work. Investigation of

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O'Connor, Arthur Bruce 1963. "Polarization properties of high numerical aperture holographic optical elements." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277172.

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The polarization dependent diffraction efficiency and imaging properties of high numerical aperture (N.A.) holographic optical elements (HOEs) were investigated to determine the suitability of these elements for magneto-optic data storage head applications. Two-wave first-order coupled wave theory was combined with a local planar grating model to determine the s and p-polarization diffraction efficiency characteristics of these HOEs. Experimental results for 0.55 N.A. focusing HOEs fabricated in silver halide photographic emulsions and dichromated gelatin films demonstrated that the p-to-s-pol

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Cheng, Chin-Yuan. "Numerical electromagnetic modeling of a small aperture helical-fed reflector antenna." Ohio : Ohio University, 1998. http://www.ohiolink.edu/etd/view.cgi?ohiou1176838193.

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Ament, Craig A. "High numerical aperture axial and transverse beam shaping using diffractive optics." Honors in the Major Thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETH/id/1348.

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This item is only available in print in the UCF Libraries. If this is your Honors Thesis, you can help us make it available online for use by researchers around the world by following the instructions on the distribution consent form at http://library.ucf.edu/Systems/DigitalInitiatives/DigitalCollections/InternetDistributionConsentAgreementForm.pdf You may also contact the project coordinator, Kerri Bottorff, at kerri.bottorff@ucf.edu for more information.<br>Bachelors<br>Sciences<br>Physics

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Messelink, W. A. C. M. "Numerical methods for the manufacture of optics using sub-aperture tools." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1471480/.

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Moore's law, predicting a doubling of transistor count per microprocessor every two years, remains valid, demonstrating exponential growth of computing power. This thesis examines the application of numerical methods to aid optical manufacturing for a number of case-studies related to the use of sub-aperture tools. One class of sub-aperture tools consists of rigid tools which are well suited to smooth surfaces. Their rigidity leads to mismatch between the surfaces of tool and aspheric workpieces. A novel, numerical method is introduced to analyse the mismatch qualitatively and quantitatively,

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Mokamati, Satyanarayana V. "Effect of aperture geometry on the steady flow through the narrow apertures in a pulp screen : numerical and experimental study." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31439.

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This investigation examines turbulent flow across a contoured wall with evenly-spaced slots and a series of flow bifurcations, as found in industrial pulp screening. The contoured wall and slotted apertures are formed from an array of 'wires', with cross-sectional geometry characterized by contour height and wire width. Four complementary studies were conducted to examine the velocity and turbulence characteristics of this complex flow. In the first study, a Computational Fluid Dynamics (CFD) model was developed to theoretically examine the effect of wire cross-sectional geometry on the flow f

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Chidley, Matthew D. "High Numerical Aperture Injection-Molded Miniature Objective For Fiber-Optic Confocal Reflectance Microscopy." Diss., Tucson, Arizona : University of Arizona, 2005. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1300%5F1%5Fm.pdf&type=application/pdf.

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Romero, Carlos Alberto Macias. "High numerical aperture Muller matrix polarimetry and applications to multiplexed optical data storage." Thesis, Imperial College London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.517617.

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Jabbour, Toufic. "DESIGN, ANALYSIS, AND OPTIMIZATION OF DIFFRACTIVE OPTICAL ELEMENTS UNDER HIGH NUMERICAL APERTURE FOCUSING." Doctoral diss., University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2837.

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The demand for high optical resolution has brought researchers to explore the use of beam shaping diffractive optical elements (DOEs) for improving performance of high numerical aperture (NA) optical systems. DOEs can be designed to modulate the amplitude, phase and/or polarization of a laser beam such that it focuses into a targeted irradiance distribution, or point spread function (PSF). The focused PSF can be reshaped in both the transverse focal plane and along the optical axis. Optical lithography, microscopy and direct laser writing are but a few of the many applications in which a prope

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Books on the topic "Numerical aperture"

1

Wilson, R. Gale. Numerical aperture limits on efficient ball lens coupling of laser diodes to single-mode fibers with defocus to balance spherical aberration. National Aeronautics and Space Administration, Langley Research Center, 1994.

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Wilson, R. Gale. Numerical aperture limits on efficient ball lens coupling of laser diodes to single-mode fibers with defocus to balance spherical aberration. National Aeronautics and Space Administration, Langley Research Center, 1994.

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3

Center, Langley Research, ed. A novel method of calculating far-field patterns of large aperture antennas. National Aeronautics and Space Administration, Langley Research Center, 1986.

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Book chapters on the topic "Numerical aperture"

1

Weik, Martin H. "numerical aperture." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_12618.

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Weik, Martin H. "numerical aperture loss." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_12619.

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Weik, Martin H. "launch numerical aperture." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_10011.

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Weik, Martin H. "maximum theoretical numerical aperture." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_11218.

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Juškaitis, Rimas. "Characterizing High Numerical Aperture Microscope Objective Lenses." In Springer Series in Optical Sciences. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-46022-0_2.

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Gu, Min. "Imaging with a High Numerical-Aperture Objective." In Advanced Optical Imaging Theory. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-540-48471-4_6.

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Gu, Min, and Guangyong Zhou. "Spherical Aberration and its Compensation for High Numerical Aperture Objectives." In 3D Laser Microfabrication. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/352760846x.ch3.

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8

Paturzo, Melania, Francesco Merola, Simonetta Grilli, and Pietro Ferraro. "Improving Numerical Aperture in DH Microscopy by 2D Diffraction Grating." In Coherent Light Microscopy. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-15813-1_12.

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Ciattaglia, M., and G. Marrocco. "On the Efficient Numerical Time-Domain Processing of Aperture Antenna Field." In Ultra-Wideband, Short-Pulse Electromagnetics 7. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-37731-5_15.

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Niemann, B. "High Numerical-Aperture X-Ray Condensers for Transmission X-Ray Microscopes." In X-Ray Microscopy and Spectromicroscopy. Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-642-72106-9_35.

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Conference papers on the topic "Numerical aperture"

1

Mammone, Richard J., and Xiaoyu Zhang. "High-numerical-aperture reflecting microscope." In Electronic Imaging: Science & Technology, edited by Carol J. Cogswell, Gordon S. Kino, and Tony Wilson. SPIE, 1996. http://dx.doi.org/10.1117/12.237472.

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Schuurmans, Frank, Marcello Balistreri, Teus Tukker, Gert 't Hooft, and Sjoerd Stallinga. "High-Numerical Aperture Holographic Data Storage." In International Symposium on Optical Memory and Optical Data Storage. OSA, 2005. http://dx.doi.org/10.1364/isom_ods.2005.mp23.

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Yeung, Michael S., and Burn J. Lin. "Modeling High Numerical Aperture Optical Lithography." In 1988 Microlithography Conferences. SPIE, 1988. http://dx.doi.org/10.1117/12.968409.

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Katz, Barton A., James S. Greeneich, Mark G. Bigelow, Ann Katz, Frits J. van Hout, and Jos F. Coolsen. "High-numerical-aperture I-line stepper." In Microlithography '90, 4-9 Mar, San Jose, edited by Victor Pol. SPIE, 1990. http://dx.doi.org/10.1117/12.20183.

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Crompvoets, Floris M. H., Frank Schuurmans, Marcello Balistreri, Teus Tukker, Gert't Hooft, and Sjoerd Stallinga. "High-numerical aperture holographic data storage." In SPIE Proceedings, edited by Yury Denisyuk, Ventseslav Sainov, and Elena Stoykova. SPIE, 2006. http://dx.doi.org/10.1117/12.677016.

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Liang, Rongguang. "High numerical aperture line scanning system." In Optical Engineering + Applications, edited by R. John Koshel and G. Groot Gregory. SPIE, 2007. http://dx.doi.org/10.1117/12.727615.

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Skutnik, Bolesh J., Brian Foley, and Kelly B. Moran. "High-numerical-aperture silica core fibers." In Biomedical Optics 2004, edited by Israel Gannot. SPIE, 2004. http://dx.doi.org/10.1117/12.529467.

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Kumagai, Toshiki, Kenichi Hibino, and Yasunari Nagaike. "Synthetic aperture phase-shifting interferometry for high numerical-aperture spherical surface measurement." In Interferometry XIX, edited by Michael B. North Morris, Katherine Creath, Jan Burke, and Angela D. Davies. SPIE, 2018. http://dx.doi.org/10.1117/12.2319643.

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Nall, David F., and Gregory M. Alman. "The numerical aperture of an optical fiber." In ICALEO® ‘92: Proceedings of the Challenges in Lasers in Education Symposium. Laser Institute of America, 1992. http://dx.doi.org/10.2351/1.5058547.

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Kim, Youngsik, and Tom D. Milster. "Hyper Numerical Aperture Blu-ray Disc Recording." In Joint International Symposium on Optical Memory and Optical Data Storage. OSA, 2011. http://dx.doi.org/10.1364/isom_ods.2011.otud13.

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