Oscillation Threshold For Focused Gaussian Beams
Designs of One-Element Refracting System for Gaussian and Annular-Gaussian Beams Transformations
... laser beams are heavily used in many applications in which the laser beam is being focused to a small spot ...laser beams with uniform intensity profiles are needed to illuminate evenly an entire ...
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Radiation Forces on a Dielectric Sphere Produced by Finite Olver Gaussian Beams
... with 1 2 ( ) , ( ) , 2 2 ∇ E r t = E r t 4. Numerical Simulations and Results Discussions By the use of the theory of the radiation on a dielectric sphere, exposed in the previous section, we will prove numerically that ...
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Determination of Cross-Sectional Area of Focused Picosecond Gaussian Laser Beam
... a focused Gaussian-beam at the 1/e 2 intensity, also referred to as spot size, is key to determining the fluence in laser processing ...the threshold energy and threshold fluence of a given ...
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General analysis of type I second harmonic generation with elliptical Gaussian beams
... Cylindrical focusing was first considered for second- harmonic generation by Volosov and Nilov, 9 Volosov, 10 and Chmela, 11 but true elliptical arrangements were not addressed until Librecht and Simons 12 considered a ...
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Gaussian Beams. Enrique J. Galvez Department of Physics and Astronomy Colgate University
... for N = 0. One can understand these modes with the analogy of a drum. The membrane of the drum can oscillate in its lowest-order mode: the whole membrane goes up an down. This mode has the lowest pitch. The next ...
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Directional scattering and multipolar contributions to optical forces on silicon nanoparticles in focused laser beams
... a focused Gaussian beam Guided by the insights discussed above, we now turn to the question of how the asymmetric scattering from a Si particle affects the possibility to trap the particle using a single ...
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LICORNE: A new and unique facility for producing intense, kinematically focused neutron beams at the IPN Orsay
... 2. Inverse kinematics The main advantage of inverse kinematics is the natural forward collimation of the reaction ejectiles. The heavier the projectile nucleus, the greater the collimation. For reactions which eject ...
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Apparent beam size definition of focused ion beams based on scanning electron microscopy images of nanodots
... It was found that the minimum charge, which still pro- duces nanodots big enough to be SEM visualized, is 32.5 pC. To obtain enough data points for the FWHM extrapola- tion, the charge was incrementally increased to ...
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Focused very high-energy electron beams as a novel radiotherapy modality for producing high-dose volumetric elements
... Electron beams are simulated for 200 MeV and 2 GeV energy, with mono-energetic distribution, using both collimated and focusing ...section. Focused VHee ...electron beams with energy of 200 MeV and 2 ...
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Electric field Monte Carlo simulations of focal field distributions produced by tightly focused laser beams in tissues
... a Gaussian-shaped focal volume, while the light propagation still proceeds in an incoherent manner ...in focused light geometries to calculate the loss of interference efficiency in optical coherence ...
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Ultrasonic Beams with Bessel and Gaussian Profiles
... In order to pole a piezoelectric element with an electric field of the form of a (truncated) Gaussian or Bessel function, such a field must first be generated.[r] ...
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Extremes of threshold-dependent Gaussian processes
... some threshold- dependent Gaussian process and then application of the double sum technique was used also in several contributions that deal with analogs of ...
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Threshold Switching and Self-Oscillation in Niobium Oxide
... 4 focused on understanding the threshold switching behaviour and anatomy of Pt/NbO x /TiN device ...self-assembled threshold-memory switching after a forming process and a subsequent SET/RESET ...
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Reflection and transmission of Laguerre Gaussian beams in a dielectric slab
... c Department of Physics, Lancaster University, Lancaster, UK * Corresponding author: [email protected] Abstract This paper considers the reflection and transmission characteristics of a Laguerre-Gaussian (LG) ...
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Threshold switching and electrical self-oscillation in niobium oxide films
... self- oscillation, 19,20 Lalevic and Shoga first reported stable and reproducible oscillations with frequency up to 600 kHz in single crystal NbO 2 and polycrystalline NbO x films in ...periodic ...
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Writing 3D Nanomagnets Using Focused Electron Beams
... Abstract: Focused electron beam induced deposition (FEBID) is a direct-write nanofabrication technique able to pattern three-dimensional magnetic nanostructures at resolutions comparable to the characteristic ...
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Propagation of Modified Bessel Gaussian Beams in a Misaligned Optical System
... The formalism of generalized diffraction integral for paraxial misaligned optical systems is used to investigate the propagation of the Modified Bessel-Gaussian (MBG) beam through a misaligned thin lens. The ...
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Novel Finite Airy Array Beams Generated from Gaussian Array Beams Illuminating an Optical Airy Transform System
... Array Beams Generated from Gaussian Array Beams Illuminating an Optical Airy Transform System Lahcen Ez-Zariy, Zoubir Hricha, and Abdelmajid Belafhal * Abstract—In this work, a novel family of Finite ...
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The LBNO long-baseline oscillation sensitivities with two conventional neutrino beams at different baselines
... the oscillation parameters and the systematics are contained in χ 2 syst that has a different form for correlated and uncorrelated ...the oscillation parameters are always treated as fully correlated ...
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Focusing of Dark Hollow Gaussian Electromagnetic Beams in a Plasma with Relativistic-Ponderomotive Regime
... Ramanna Fellowship Program, Department of Education Building Lucknow University Lucknow 226007, India Abstract—This paper presents a theoretical model for the propaga- tion of a hollow Gaussian electromagnetic ...
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