Search Results - "Dennis, M. R"
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Direct measurements of the extraordinary optical momentum and transverse spin-dependent force using a nano-cantilever
Published in Nature physics (01-08-2016)“…An unexpected optical momentum and force perpendicular to the wavevector are measured using a nano-cantilever in an evanescent optical field, confirming a…”
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Swings and roundabouts: optical Poincaré spheres for polarization and Gaussian beams
Published in Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences (28-02-2017)“…The connection between Poincaré spheres for polarization and Gaussian beams is explored, focusing on the interpretation of elliptic polarization in terms of…”
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Measuring Geometric Phase without Interferometry
Published in Physical review letters (08-06-2018)“…A simple noninterferometric approach for probing the geometric phase of a structured Gaussian beam is proposed. Both the Gouy and Pancharatnam-Berry phases can…”
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Ray and caustic structure of Ince-Gauss beams
Published in New journal of physics (01-01-2024)“…The Ince-Gauss beams, separable in elliptic coordinates, are studied through a ray-optical approach. Their ray structure can be represented over a Poincaré…”
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Knotted fields and explicit fibrations for lemniscate knots
Published in Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences (01-06-2017)“…We give an explicit construction of complex maps whose nodal lines have the form of lemniscate knots. We review the properties of lemniscate knots, defined as…”
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Generalized shifts and weak values for polarization components of reflected light beams
Published in New journal of physics (09-07-2012)“…The simple reflection of a light beam of finite transverse extent from a homogeneous interface gives rise to a surprisingly large number of subtle shifts and…”
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Polarization singularities in paraxial vector fields: morphology and statistics
Published in Optics communications (01-12-2002)“…Polarization patterns in the transverse plane generically contain singularities: points of circular polarization (C points), lines of linear polarization (L…”
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Vortex knots in light
Published in New journal of physics (15-02-2005)Get full text
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Polarization singularities in the clear sky
Published in New journal of physics (10-11-2004)Get full text
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The optical singularities of birefringent dichroic chiral crystals
Published in Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences (08-05-2003)“…Using a new formalism involving projection from the sphere of directions to the stereographic plane, and associated complex variables, explicit formulae are…”
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Phase singularities in isotropic random waves
Published in Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences (08-09-2000)“…The singularities of complex scalar waves are their zeros; these are dislocation lines in space, or points in the plane. For waves in space, and waves in the…”
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Reconnections of Wave Vortex Lines
Published in European journal of physics (01-05-2012)“…When wave vortices, that is nodal lines of a complex scalar wavefunction in space, approach transversely, their typical crossing and reconnection is a…”
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Knotted and linked phase singularities in monochromatic waves
Published in Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences (08-09-2001)“…dislocation loop threaded by a strength…”
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Braided nodal lines in wave superpositions
Published in New journal of physics (14-10-2003)Get full text
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Entangled optical vortex links
Published in Physical review letters (11-03-2011)“…Optical vortices are lines of phase singularity which percolate through all optical fields. We report the entanglement of linked optical vortex loops in the…”
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Polarization singularities in isotropic random vector waves
Published in Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences (08-01-2001)“…Following Nye & Hajnal, we explore the geometry of complex vector waves by regarding them as a field of polarization ellipses. Singularities of this field are…”
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The introduction of Hurrian religion into the Hittite empire
Published in Religion compass (01-12-2016)“…The early Hittite New Kingdom was a period of great change. It was during this period that both a remarkable amount of Hurrian textual material entered into…”
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Hethitische Texte in Transkription KBo 45
Published in Journal of Near Eastern Studies (01-04-2010)“…Campbell reviews Hethitische Texte in Transkription KBo 45 by Hanna Roszkowska-Mutschler…”
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Geometry of Călugăreanu's theorem
Published in Proceedings of the Royal Society. A, Mathematical, physical, and engineering sciences (08-10-2005)“…A central result in the space geometry of closed twisted ribbons is Călugăreanu's theorem (also known as White's formula, or the Călugăreanu–White–Fuller…”
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