The New Physical Optics Notebook

Reynolds, George O.; DeVelis, John B.; Parrent, George B.; Thompson, Brian J.

doi:10.1117/3.2303

Cited by 98 publications

(20 citation statements)

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“…when 6 = 7r/n. Thus, 6min, the minimum separation of two 6 functions that can be distinguished as two separate distributions, is approximately 7r/nm~x, and once again we recover the usual criterion for resolving two objects optically (Reynolds, DeVelis, Parrent & Thompson, 1989). The situation changes dramatically when one is able to make suitable variations in the contrast.…”

Section: Factors Are Respectively Given By H!l)(t~) -~2/a2supporting

confidence: 69%

“…The argument that is used to define the resolution of a reflection experiment is based on a standard optical argument (Reynolds, DeVelis, Parrent & Thompson, 1989), which we adapt to the situation pertaining for the C16TAB layer. We assume an analytic distribution of a single component through the interface, for which there are three convenient forms, the 5 function, a Gaussian (24) and a uniform layer.…”

Section: The Resolution Of the Reflection Experimentsmentioning

confidence: 99%

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The Analysis and Interpretation of Neutron and X-ray Specular Reflection

Lu¹,

Lee²,

Thomas³

1996

Acta Cryst Sect A

138

125

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Methods of analysing neutron and X-ray specular reflection from interfacial systems are reviewed. Normally, the profile of the scattering-length density is determined in such experiments but here particular emphasis is given to the determination of the interfacial composition profile using partial structure factors and simultaneous fitting of sets of reflectivity profiles from a given structure, obtained either by isotopic substitution or by the use of neutrons and X-rays together. Aspects of the analysis of reflectivity data in terms of the resolution of the experiment, the phase problem and the possible ways of describing the structure of an interface are considered with reference to an unusually large set of independent data from isotopic species of a monolayer of hexadecyltrimethylammonium bromide adsorbed at the air/water interface. Data from another surfactant, the monododecyl ether of triethylene glycol, is used to assess the optimum choice of isotopic composition for combining a single set of neutron data with an X-ray reflectivity profile from an adsorbed layer at the air/water interface.

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Section: Factors Are Respectively Given By H!l)(t~) -~2/a2supporting

confidence: 69%

Section: The Resolution Of the Reflection Experimentsmentioning

confidence: 99%

The Analysis and Interpretation of Neutron and X-ray Specular Reflection

Lu¹,

Lee²,

Thomas³

1996

Acta Cryst Sect A

138

125

View full text Add to dashboard Cite

show abstract

“…An image-processing system transforms one image into another with enhanced features, or obtains a new image from more than one image, such as the correlation of two images [35][36][37].…”

Section: Processingmentioning

confidence: 99%

Entangled-photon Fourier optics

et al. 2002

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Entangled photons, generated by spontaneous parametric down-conversion from a second-order nonlinear crystal, present a rich potential for imaging and image-processing applications. Since this source is an example of a threewave mixing process, there is more flexibility in the choices of illumination and detection wavelengths and in the placement of object(s) to be imaged.Moreover, this source is entangled, a fact that allows for imaging configurations and capabilities that cannot be achieved using classical sources of light.In this paper we examine a number of imaging and image-processing configurations that can be realized using this source. The formalism that we utilize facilitates the determination of the dependence of imaging resolution on the physical parameters of the optical arrangement.

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“…Also, they will understand how the mathematic formula from the literature [1][2][3][4] describes a distribution of intensity in two-dimensions. Then, they will put the object in the experimental set-up and produce the diffraction pattern, allowing consolidating the concepts.…”

Section: Measurement Proceduresmentioning

confidence: 99%

“…In order to complement that course, an elective course in the fourth year is given, called Applied Optics. There, students gain a solid mathematical base in diffraction [3][4], as well as they learn about image processing [5] and holography [3,6,7]. Also, there are other elective courses like Quantum Optics and Introduction to Photonics.…”

Section: Introductionmentioning

confidence: 99%

Teaching Fraunhofer diffraction via experimental and simulated images in the laboratory

et al. 2012

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Diffraction is an important phenomenon introduced to Physics university students in a subject of Fundamentals of Optics. In addition, in the Physics Degree syllabus of the Universitat Autònoma de Barcelona, there is an elective subject in Applied Optics. In this subject, diverse diffraction concepts are discussed in-depth from different points of view: theory, experiments in the laboratory and computing exercises. In this work, we have focused on the process of teaching Fraunhofer diffraction through laboratory training.Our approach involves students working in small groups. They visualize and acquire some important diffraction patterns with a CCD camera, such as those produced by a slit, a circular aperture or a grating. First, each group calibrates the CCD camera, that is to say, they obtain the relation between the distances in the diffraction plane in millimeters and in the computer screen in pixels. Afterwards, they measure the significant distances in the diffraction patterns and using the appropriate diffraction formalism, they calculate the size of the analyzed apertures. Concomitantly, students grasp the convolution theorem in the Fourier domain by analyzing the diffraction of 2-D gratings of elemental apertures.Finally, the learners use a specific software to simulate diffraction patterns of different apertures. They can control several parameters: shape, size and number of apertures, 1-D or 2-D gratings, wavelength, focal lens or pixel size. Therefore, the program allows them to reproduce the images obtained experimentally, and generate others by changing certain parameters. This software has been created in our research group, and it is freely distributed to the students in order to help their learning of diffraction.We have observed that these hands on experiments help students to consolidate their theoretical knowledge of diffraction in a pedagogical and stimulating learning process.

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The New Physical Optics Notebook

Cited by 98 publications

References 0 publications

The Analysis and Interpretation of Neutron and X-ray Specular Reflection

The Analysis and Interpretation of Neutron and X-ray Specular Reflection

Entangled-photon Fourier optics

Teaching Fraunhofer diffraction via experimental and simulated images in the laboratory

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