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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 36 for “"Faraday rotation"”.
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A polarization sensitive interferometer for Faraday rotation detection
Time-resolved Faraday rotation (TRFR) is a pulsed laser pump/probe optical measurement used to characterize electron spin dynamics in semiconductor materials. A Mach-Zehnder type interferometer with orthogonally polarized arms is presented as a device for TRFR measurement that is superior to …
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The design and synthesis of organic chromophores for Faraday rotation and photoluminescence
… structure to maximize properties including Faraday rotation and delayed fluorescence. In Chapter 1, we introduce the magneto-optical property Faraday rotation. The current frontiers in performance, applications, and mechanistic understanding of Faraday rotation in organic-chromophore …
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Faraday Rotation of Electromagnetic Waves in Waveguides Containing Gaseous Discharge Plasmas With Applied Longitudinal Magnetic Fields
Made available in DSpace on 2014-12-04T21:02:42Z (GMT). No. of bitstreams: 1 0010469.pdf: 4234617 bytes, checksum: 32b15113f33982b69247b5cb81e2ae17 (MD5) Previous issue date: 1954
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A Method of Determination of Ionospheric Electron Density Profiles From Faraday Rotation of Satellite Borne Radio Signals
Made available in DSpace on 2014-12-04T21:03:33Z (GMT). No. of bitstreams: 1 6303252.pdf: 1902022 bytes, checksum: 50340d9815e893d53f4d069f13c91861 (MD5) Previous issue date: 1962
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Investigation of Electronic Molecular Materials with Magneto-Optical and Magnetic Properties
… the magneto-optical phenomenon known as Faraday rotation and its manifestation in organic materials. Current frontiers in performance, applications, and mechanistic underpinnings of the Faraday effect in organic-chromophore thin films are discussed. In Chapter 2, we evaluate the Faraday …
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The development of new methods for high resolution radio astronomy imaging
… observations of AGN jets allow the creation of Faraday rotation measure maps which can be used to gain an insight into the magnetic field component of the jet along the line of sight. Recent polarisation and Faraday rotation measure maps of many AGN show possible evidence for the presence of …
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Parsec-scale polarization of the jet in quasar 4C 71.07
… by a number of factors; external and internal Faraday rotation, unresolved changes in jet direction ("wiggles"), asymmetric magnetic field structures and gravitational lensing. Lensing rotates the image, leaving the polarization orientation unchanged, even when the lensing is sufficiently weak …
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High performance magneto-optic garnet materials for integrated optics and photonics
… of layers), and magneto-optic behaviour (Faraday rotation, hysteresis loops of Faraday rotation, and magnetic switching behaviour) of these sputtered garnet films are investigated in this work. These garnet materials possess high quality nanocrystalline thin-film microstructures and …
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High Frequency Radio Wave Transionospheric Propagation Polarization Studies from the RRI-SuperDARN Experiment
… radar conjunctions. Phenomena such as the Faraday rotation effect and the Voigt effect are extracted from the theory and demonstrated to occur in the Saskatoon flybys. Features in the orientation angle and ellipticity angle of the Saskatoon flybys are compared and contrasted to previously …
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Growth and characterization of bismuth perovskite thin films for integrated magneto-optical isolator applications
… from first physical principles the dependence of Faraday rotation, absorption, and certain figures of merit on the material's dielectric tensor elements. Next, we use pulsed laser deposition to grow thin films of BiFeO3 on MgO (001) and SrTiO3 (001) substrates. After optimizing growth conditions …
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Observational and theoretical studies of SiO maser polarization toward late-type evolved stars: Insights from EVPA reversal features
… linear to circular modes through scattering or Faraday rotation. Some maser features display an internal rotation in their electric vector position angle (EVPA) by $\triangle \chi \sim \pi/2$ across their extent; such features can provide robust constraints on SiO maser polarization theories as …
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Magneto-Optic Spectroscopy and Near-Field Optical Coupling in Nanoparticle Composite Materials
The Faraday rotation spectrum of composites containing magnetite nanoparticles is found to be dependent on the interparticle spacing of the constituent nanoparticles. The composite materials are prepared by combining chemicallysynthesized Fe3O4 (magnetite) nanoparticles (8 nm diameter) and …
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Results from prototype polarimeter/interferometer on Alcator C-Mod
… about these quantities is polarimetry, in which Faraday rotation caused by the plasma is measured. Design has begun for a 20-channel, Far-infrared polarimeter-interferometer system on Alcator C-Mod. In preparation for this experiment, a poloidally-viewing prototype polarimeter-interferometer has …
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Magneto-Optical Study of Cobalt Ferrite Nanoparticles
… structural orientations of each cation involved. Faraday rotation was measured on nanoparticle samples dried on an amorphous silica substrate from 400-1000 nm.
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The Synthesis of Core-Shell Iron@Gold Nanoparticles and Their Characterization
… UV-visible absorption spectroscopy and Faraday rotation were employed to characterize the morphology, structure, composition and magnetic properties of the products. HRTEM images show clear core-shell structure with different crystal lattices from Fe and Au. SQUID magnetometry reveals …
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Integrated optical isolators
… A brief description of this phenomenon, known as Faraday rotation, will be given in this chapter. Then previous work on integrated isolators will be presented. Finally, an overview of this thesis will be given.
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Excitons in the thallous halides
… with the magnetoabsorption results. Both Faraday rotation and direct magneto-absorption experiments were performed. Analysis of the experiments yielded exciton binding energies, effective reduced and carrier masses, effective g values, the energy gaps, peak positions and spin orbit …
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Detecting the magnetic cosmic web through deep radio polarization imaging
… probes of magnetic fields in the cosmos. Faraday rotation of polarized radiation provides one of the methods to observe magnetic fields. Measuring the rotation of the polarisation angle of radiation from an extragalactic source over a broad radio bandwidth allows us to infer the properties …
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Polarization VLBI monitoring of BL lacertae - kinematics, faraday effects and intermediate scale structure
… of the source through the phenomenon of Faraday rotation. An attempt is also made to exploit the wealth of VLBI data on this source available in the literature to derive a kinematic model for superluminal components (knots) in its radio jet. Four epochs of multi-frequency monitoring of BL …
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DEVELOPMENT OF MAGNETO-OPTIC SENSORS WITH GALLIUM IN BISMUTH DOPED RARE-EARTH IRON-GARNET THICK FILMS
We have investigated the Faraday effect of bismuth-doped rare-earth iron-garnets with varying doping levels of gallium from z = 1.0 to 1.35. We used lutetium to control the film's in-plane magnetic properties and found that gallium doping levels above the compensation point caused a loss of …
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