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Relevant bibliographies by topics / Wollaston prisms

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Academic literature on the topic 'Wollaston prisms'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Wollaston prisms"

1

Feldman, M., A. El-Amawy, A. Srivastava, and R. Vaidyanathan. "Adjustable Wollaston-like prisms." Review of Scientific Instruments 77, no. 6 (June 2006): 066109. http://dx.doi.org/10.1063/1.2216566.

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Bian, Shaoping, Kebin Xu, and Jing Hong. "Optical perfect shuffle using Wollaston prisms." Applied Optics 30, no. 2 (January 10, 1991): 173. http://dx.doi.org/10.1364/ao.30.000173.

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Montarou, Carole C., and Thomas K. Gaylord. "Analysis and design of modified Wollaston prisms." Applied Optics 38, no. 31 (November 1, 1999): 6604. http://dx.doi.org/10.1364/ao.38.006604.

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Oliva, E., S. Gennari, L. Vanzi, A. Caruso, and M. Ciofini. "Optical materials for near infrared Wollaston prisms." Astronomy and Astrophysics Supplement Series 123, no. 1 (May 1997): 179–82. http://dx.doi.org/10.1051/aas:1997311.

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Gao, Zhan. "Imaging polarization spectrometer based on the Wollaston prisms." Optical Engineering 50, no. 4 (April 1, 2011): 043602. http://dx.doi.org/10.1117/1.3560263.

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Padgett, M. J., and A. R. Harvey. "A static Fourier‐transform spectrometer based on Wollaston prisms." Review of Scientific Instruments 66, no. 4 (April 1995): 2807–11. http://dx.doi.org/10.1063/1.1145559.

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Li, Fankang, and Roger Pynn. "A novel neutron spin echo technique for measuring phonon linewidths using magnetic Wollaston prisms." Journal of Applied Crystallography 47, no. 6 (October 17, 2014): 1849–54. http://dx.doi.org/10.1107/s1600576714020597.

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A new method of implementing neutron spin echo measurement of phonon linewidths on a triple-axis neutron spectrometer is introduced, based on recently developed superconducting magnetic Wollaston prisms. Each arm of the spectrometer is composed of two Wollaston prisms with a rectangular field region between them. By introducing triangular and rectangular field regions, loci of constant spin echo phase can be manipulated easily to achieve the so-called phonon focusing condition. Unlike the neutron resonance spin echo method, which is tuned by physically tilting the field boundaries, the new device can be tuned electromagnetically to achieve the phonon focusing condition. By adjusting the field configurations, the linewidths of phonon excitations with high energy and large group velocity can be measured. By employing superconducting films to define the various field regions, high neutron transmission and good neutron polarization efficiency can be obtained.

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Desse, Jean-Michel, and Pascal Picart. "Quasi-common path three-wavelength holographic interferometer based on Wollaston prisms." Optics and Lasers in Engineering 68 (May 2015): 188–93. http://dx.doi.org/10.1016/j.optlaseng.2014.12.018.

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Syniavskyi, Ivan, Yevgen Oberemok, Yuriy Ivanov, and Mikhail Sosonkin. "Multispectral Polarization State Analyzer of Scanning Polarimeter ScanPol." International Journal of Optics 2020 (October 25, 2020): 1–15. http://dx.doi.org/10.1155/2020/1695658.

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We present the results of the development of a representational model of the multispectral polarization state analyzer of the ScanPol scanning polarimeter for the space experiment Aerosol-UA. The aim of the Ukrainian space mission Aerosol-UA is to create a database based on continuous satellite measurements of the optical characteristics of aerosol and cloud particles in the Earth’s atmosphere over a long period of time. The ScanPol polarimeter is designed to acquire spatial, temporal, and spectral-polarimetric measurements simultaneously to minimize instrumental “parasitic” effects and effects of “false” polarizations due to scene movement. Simultaneity is provided by separation of the initial spatial field by a pair of conjugated telescopes and a pair of Wollaston prisms. ScanPol provides to measure the first three Stokes parameters I, Q, and U of the radiation reflected by atmospheric aerosols and the Earth’s surface for a six solar reflectance spectral bands in the near ultraviolet (NUV), visible (VIS), and near-infrared (NIR) spectral channels centered in the wavelengths 370 nm, 410 nm, 555 nm, 865 nm, 1378 nm, and 1620 nm. Stokes parameters I, Q, and U are used to determine a degree of linear polarization of radiation that will allow obtaining the phase function and polarization characteristics of aerosol particle scattering, estimate their size, and determine the aerosol type and optical thickness. The polarimeter optical layout is considered, and the spectral characteristics of the transmission of optical channels are given. Obtained signal-to-noise ratio exceeded 500 for wavelengths 370 nm and 410 nm and exceeded 1000 for other wavelengths. The design of the chosen photodetectors is based on surface mount type photodiodes: Si-photodiodes Hamamatsu S10356-01 for the optical range of 370–860 nm and InGaAs-photodiodes Hamamatsu G8941-011620 for wavelengths 1378 nm and 1620 nm. The effect of orientation of Wollaston prisms axes on polarization measurement error is considered. The errors of azimuth mount of Wollaston prisms ≤2 arcmin in ScanPol leads to error of degree of linear polarization ≤0.0012.

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Li, Fankang, Steven R. Parnell, Hongyu Bai, Wencao Yang, William A. Hamilton, Brian B. Maranville, Rana Ashkar, David V. Baxter, J. Ted Cremer, and Roger Pynn. "Spin echo modulated small-angle neutron scattering using superconducting magnetic Wollaston prisms." Journal of Applied Crystallography 49, no. 1 (February 1, 2016): 55–63. http://dx.doi.org/10.1107/s1600576715021573.

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The spin echo modulated small-angle neutron scattering technique has been implemented using two superconducting magnetic Wollaston prisms at a reactor neutron source. The density autocorrelation function measured for a test sample of colloidal silica in a suspension agrees with that obtained previously by other neutron scattering methods on an identically prepared sample. The reported apparatus has a number of advantages over competing technologies: it should allow larger length scales (up to several micrometres) to be probed; it has very small parasitic neutron scattering and attenuation; the magnetic fields within the device are highly uniform; and the neutron spin transport across the device boundaries is very efficient. To understand quantitatively the results of the reported experiment and to guide future instrument development, Monte Carlo simulations are presented, in which the evolution of the neutron polarization through the apparatus is based on magnetic field integrals obtained from finite-element simulations of the various magnetic components. The Monte Carlo simulations indicate that the polarization losses observed in the experiments are a result of instrumental artifacts that can be easily corrected in future experiments.

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Dissertations / Theses on the topic "Wollaston prisms"

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Montarou, Carole C. "Analysis and design of modified Wollaston prisms." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/13924.

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Wong, Gerald. "Snapshot hyperspectral imaging : near-infrared image replicating imaging spectrometer and achromatisation of Wollaston prisms." Thesis, Heriot-Watt University, 2012. http://hdl.handle.net/10399/2615.

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Conventional hyperspectral imaging (HSI) techniques are time-sequential and rely on temporal scanning to capture hyperspectral images. This temporal constraint can limit the application of HSI to static scenes and platforms, where transient and dynamic events are not expected during data capture. The Near-Infrared Image Replicating Imaging Spectrometer (N-IRIS) sensor described in this thesis enables snapshot HSI in the short-wave infrared (SWIR), without the requirement for scanning and operates without rejection in polarised light. It operates in eight wavebands from 1.1μm to 1.7μm with a 2.0° diagonal field-of-view. N-IRIS produces spectral images directly, without the need for prior topographic or image reconstruction. Additional benefits include compactness, robustness, static operation, lower processing overheads, higher signal-to-noise ratio and higher optical throughput with respect to other HSI snapshot sensors generally. This thesis covers the IRIS design process from theoretical concepts to quantitative modelling, culminating in the N-IRIS prototype designed for SWIR imaging. This effort formed the logical step in advancing from peer efforts, which focussed upon the visible wavelengths. After acceptance testing to verify optical parameters, empirical laboratory trials were carried out. This testing focussed on discriminating between common materials within a controlled environment as proof-of-concept. Significance tests were used to provide an initial test of N-IRIS capability in distinguishing materials with respect to using a conventional SWIR broadband sensor. Motivated by the design and assembly of a cost-effective visible IRIS, an innovative solution was developed for the problem of chromatic variation in the splitting angle (CVSA) of Wollaston prisms. CVSA introduces spectral blurring of images. Analytical theory is presented and is illustrated with an example N-IRIS application where a sixfold reduction in dispersion is achieved for wavelengths in the region 400nm to 1.7μm, although the principle is applicable from ultraviolet to thermal-IR wavelengths. Experimental proof of concept is demonstrated and the spectral smearing of an achromatised N-IRIS is shown to be reduced by an order of magnitude. These achromatised prisms can provide benefits to areas beyond hyperspectral imaging, such as microscopy, laser pulse control and spectrometry.

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Jones, Julia Craven. "Infrared Hyperspectral Imaging Stokes Polarimeter." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/145409.

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This work presents the design, development, and testing of a field portable imaging spectropolarimeter that operates over the short-wavelength and middle-wavelength portion of the infrared spectrum. The sensor includes a pair of sapphire Wollaston prisms and several high order retarders to produce the first infrared implementation of an imaging Fourier transform spectropolarimeter, providing for the measurement of the complete spectropolarimetric datacube over the passband. The Wollaston prisms serve as a birefringent interferometer with reduced sensitivity to vibration when compared to an unequal path interferometer, such as a Michelson. Polarimetric data are acquired through the use of channeled spectropolarimetry to modulate the spectrum with the Stokes parameter information. The collected interferogram is Fourier filtered and reconstructed to recover the spatially and spectrally varying Stokes vector data across the image.The intent of this dissertation is to provide the reader with a detailed understanding of the steps involved in the development of this infrared hyperspectral imaging polarimeter (IHIP) instrument. First, Chapter 1 provides an overview of the fundamental concepts relevant to this research. These include imaging spectrometers, polarimeters, and spectropolarimeters. A detailed discussion of channeled spectropolarimetry, including a historical study of previous implementations, is also presented. Next a few of the design alternatives that are possible for this work are outlined and discussed in Chapter 2. The configuration that was selected for the IHIP is then presented in detail, including the optical layout, design, and operation. Chapter 3 then presents an artifact reduction technique (ART) that was developed to improve the IHIP's spectropolarimetric reconstructions by reducing errors associated with non-band-limited spectral features. ART is experimentally verified in the infrared using a commercial Fourier transform spectrometer in combination with Yttrium Vanadate as well as Cadmium Sulfide retarders.The remainder of this dissertation then details the testing and analysis of the IHIP instrument. Implementation of ART with the IHIP as well as the employed calibration techniques are described in Chapter 4. Complete calibration of the IHIP includes three distinct processes to provide radiometric, spectral, and polarimetric calibration. With the instrument assembled and calibrated, results and error analyses are presented in Chapter 5. Spectropolarimetric results are obtained in the laboratory as well as outdoors to test the IHIP's real world functionality. The performance of the instrument is also assessed, including experimental measurement of signal-to-noise ratio (SNR), and an analysis of the potential sources of systematic error (such as retarder misalignment and finite polarizer extinction ratio). Chapter 6 presents the design and experimental results for a variable Wollaston prism that can be added to the IHIP to vary the fringe contrast across the field of view. Finally, Chapter 7 includes brief closing remarks summarizing this work and a few observations which may be useful for future infrared imaging Fourier transform channeled spectropolarimeter instruments.

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Lafaille, David. "Tomographie optique cohérente et optique adaptative : étude d' un prototype d' application à l' ophtalmologie." Paris 7, 2005. https://tel.archives-ouvertes.fr/tel-00010421.

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Book chapters on the topic "Wollaston prisms"

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Wothers, Peter. "From under the Nose." In Antimony, Gold, and Jupiter's Wolf. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780199652723.003.0014.

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This chapter looks at the elements in the final group of the periodic table—those elements known as the rare or noble gases. We shall see how their discovery in the atmosphere in the 1890s dates back to an observation first made by the meticulous Henry Cavendish over one hundred years earlier. This led to the unexpected discovery of an entire group of elements that needed to be added to the earliest periodic tables; and remarkably, one man was to dominate all these discoveries. One of Isaac Newton’s classic experiments was using a glass prism to split a beam of sunlight into a spectrum to show that white light is actually a mixture of all the colours of the rainbow. In 1802, William Hyde Wollaston (1766–1828), discoverer of the elements palladium and rhodium, modified the experiment by using a thin slit to admit the sunlight instead of the circular hole that Newton used. He subsequently discovered that the solar spectrum was not completely seamless, but actually contained a number of fine dark lines, now known as Fraunhofer lines. They get their name from Joseph Fraunhofer (1787–1826), who became the most skilled worker of glass and producer of lenses of the time. Using his highest-quality optical lenses, Fraunhofer observed that the solar spectrum had many dark lines; he mapped out over five hundred of these and designated the most distinct ones with the capitals letters A to H, with A and B being in the red region of the spectrum, and G and H in the violet. He used these as calibration lines in the development of better glasses for his optical instruments, and to demonstrate the superiority of his products compared with those of his competitors. The nature of the dark lines was not properly understood until the work of the German physicist Gustav Kirchhoff (1824–1997), who, in a beautiful collaboration with his colleague the chemist Robert Bunsen (1811–99), developed one of the most important analytical techniques still used in chemistry. It was with this technique that they discovered two new elements, and paved the way for others to discover many more.

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Conference papers on the topic "Wollaston prisms"

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Desse, Jean-Michel, and Pascal Picart. "Digital three-wavelength holographic interferometry using Wollaston prisms." In Digital Holography and Three-Dimensional Imaging. Washington, D.C.: OSA, 2013. http://dx.doi.org/10.1364/dh.2013.dth4a.1.

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Zhang, Site, Huiying Zhong, and Frank Wyrowski. "Modelling and design of modified Wollaston prisms and the application in differential interference contrast microscopy." In SPIE BiOS, edited by Ramesh Raghavachari, Rongguang Liang, and T. Joshua Pfefer. SPIE, 2016. http://dx.doi.org/10.1117/12.2220391.

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Kurzynowski, Piotr, Monika Borwińska, and Bogusława Dubik. "Application of a two Wollaston prisms based polarimeter for measurements of optical properties of micro-objects." In 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics. SPIE, 2008. http://dx.doi.org/10.1117/12.822368.

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Gao, Zhan, Lei Tong, Yaya Mao, and Xiaolei Chen. "The influence of polarization direction on the visibility of the new Fourier transform spectrometer based on Wollaston prisms." In International Conference of Optical Instrument and Technology, edited by Yunlong Sheng, Yongtian Wang, and Lijiang Zeng. SPIE, 2008. http://dx.doi.org/10.1117/12.806903.

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He, Anzhi, Dapeng Yan, Zu Q. Yang, and Yi Yun Zhu. "New method of increasing the sensitivity of Schlieren interferometer using two Wollaston prisms and its application to flow field." In Second Intl Conf on Photomechanics and Speckle Metrology: Moire Techniques, Holographic Interferometry, Optical NDT, and Applications to Fluid Mechanics. SPIE, 1991. http://dx.doi.org/10.1117/12.57450.

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Moseley, Paul, Giorgio Savini, Elena Saenz, Peter Ade, and Jin Zhang. "A focusing metamaterial based Wollaston Prism." In 2014 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz). IEEE, 2014. http://dx.doi.org/10.1109/irmmw-thz.2014.6956347.

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Chamoun, Jacob, and Somaye Farhadi. "Hyperspectral imaging using a Wollaston prism." In Optics and Photonics for Sensing the Environment. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/es.2020.em2c.5.

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O'Dwyer, Martin J., and Miles J. Padgett. "Wollaston prism-based digital laser wavelength meter." In Symposium on Integrated Optoelectronic Devices, edited by Ray T. Chen and Joseph C. Chon. SPIE, 2002. http://dx.doi.org/10.1117/12.469643.

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Li, Bang-Yi, Zhi-hao Qn, Xi Zhang, Yi-Nan Wei, and Jian-Wei Yu. "Modulator for optical interferometry using a Wollaston prism." In Second International Conference on Experimental Mechanics, edited by Fook S. Chau and Chenggen Quan. SPIE, 2001. http://dx.doi.org/10.1117/12.429627.

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Ebizuka, Noboru, Hideo Yokota, Fumiyoshi Kajino, Koji S. Kawabata, Masanori Iye, and Shuji Sato. "Novel direct vision prism and Wollaston prism assembly for diffraction limit applications." In SPIE Astronomical Telescopes + Instrumentation, edited by Eli Atad-Ettedgui and Dietrich Lemke. SPIE, 2008. http://dx.doi.org/10.1117/12.788528.

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