PPT-Diffraction, Gratings, Resolving Power

Textbook sections 284 286 Physics 1161 Lecture 21 Recall Interference at least 2 coherent waves Constructive full wavelength difference Destructive ½ wavelength difference. brPage 1br USING CDs AND DVDs AS DIFFRACTION GRATINGS brPage 2br Purpose of CDs and DVDs as Diffraction Gratings Activity brPage 3br CDs and DVDs as Diffraction Gratings brPage 4 Before the 1950s the prism was the pr imary dispersive element in spectrometer designs The use of an epoxy replication process in the 1950s led to the mass production of plane ruled reflective diffraction gratings New availability of ruled gratings 01 2011 4 SOL Lab reports are not turned in Labs from Week 2 your second lab are due last week Labs from Week 3 your third lab are due This week You will not be permitted to do labs next week if you have not submitted any reports by then No Lab Nov Thought Question. Consider a single slit diffraction pattern. At the first dark fringe above the middle bright fringe, what is the phase difference between the contribution to the field from the topmost and bottommost edges of the slit?. By Cade Grigsby. 1. What can X-ray diffraction tell us?. Structure. Bonds. Length. Type. Arrangement. Geometry of crystal. Picture. Electron density map. Diffraction. Angle. Intensity. 2. From X-Rays to Structure. TOPICS TO BE DISCUSSED. RESOLVING POWER. LORD RAYLEIGH CRITERION. RESOLVING POWER OF TELESCOPE. RESOLVING POWER OF GRATING. RESOLVING POWER. . The ability of an optical instrument, expressed as numerical measure to resolve the images of two nearby points is called resolving power of instrument.. 1004,1005,1010,1024,1028. . To determine the resolving power of the telescope. . Apparatus required . – A telescope, a monochromatic source of light. A microscope and adjustable measuring tape ,an object having two slits separated by a small constant distance. Zone plate. Laser-beam . diffraction. A lens transforms a Fresnel . diffraction problem to a . . Fraunhofer. diffraction problem.. The lens as a Fourier transformer. Diffraction gratings & spectrometers. Using Diffraction Gratings. Forrest . Smith. 1. , . Weliton . Soares. 2. , . Samuel . Alves. 2. , . Itamar Vidal. 2. , . Marcos . Oria. 2. . 1. State University of New York at Geneseo, . 2. Federal University of Paraiba. Using Diffraction Gratings. Forrest . Smith. 1. , . Weliton . Soares. 2. , . Samuel . Alves. 2. , . Itamar Vidal. 2. , . Marcos . Oria. 2. . 1. State University of New York at Geneseo, . 2. Federal University of Paraiba. 4: Diffractive Optics. Prof. Juejun (JJ) Hu. hujuejun@udel.edu. Diffraction: scattering of light by periodic structures. Wikipedia: a diffraction grating is an optical component with a periodic structure, which splits and diffracts light into several beams travelling in different directions. Diffraction of Light. Newton pointed . out in his 1704 book . Opticks. , that "Light is never known to follow crooked passages nor to bend into the shadow". . This concept is consistent with the particle theory, which proposes that light particles must always travel in straight lines.. Kirigami. Nanocomposite. L. . Xu. , X. Wang. , Y. . Kim, T. C. Shyu, J. . Lyu. , N.A. . Kotov, . Kirigami. . Nanocomposites as Wide-Angle Diffraction Gratings, . ACS Nano, . 2016. 10 (6), 6156–6162.. Capella. Grating Data and the Emission Line Project - An Update. Priya Desai (CfA). Nancy Brickhouse. Jeremy Drake. Dave Huenenmoerder. Randall Smith. Andrea Dupree. Vinay Kashyap. . July 11.