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Determination of air density and the quantitative estimates of water vapour adsorbed or desorbed by the surface of mass standard, remain the principals sources of uncertainties when weighing mass standard made from stainless steel or super…

仪器与探测器 · 物理学 2007-05-23 N. -E. Khélifa , P. Pinot

We present a method to measure the vector-field light scattering of individual microscopic objects. The polarization-dependent optical field images are measured with quantitative phase imaging at the sample plane, and then numerically…

光学 · 物理学 2018-04-04 Jaehwang Jung , Jinhyung Kim , Min-kyo Seo , YongKeun Park

X-ray polarimetric measurements are based on studying the distribution of the directions of scattered photons or photoelectrons and on the search of a sinusoidal modulation with a period of {\pi}. We developed two tools for investigating…

天体物理仪器与方法 · 物理学 2018-01-08 Enrico Massaro , Sergio Fabiani , Riccardo Campana , Enrico Costa , Ettore Del Monte , Fabio Muleri , Paolo Soffitta

We present a Monte Carlo simulation for the scattering of light in the case of an isotropic light source. The scattering phase functions are studied particularly in detail to understand how they can affect the multiple light scattering in…

天体物理仪器与方法 · 物理学 2014-02-18 J. Colombi , K. Louedec

The decay of an excited atom in the presence of a medium that both scatters and absorbs radiation is studied with the help of a quantum-electrodynamical model. The medium is represented by a half space filled with a randomly distributed set…

量子物理 · 物理学 2018-07-23 L. G. Suttorp , A. J. van Wonderen

Spectral cameras with integrated thin-film Fabry-P\'erot filters have become increasingly important in many applications. These applications often require the detection of spectral features at specific wavelengths or to quantify small…

光学 · 物理学 2019-05-16 Thomas Goossens , Bert Geelen , Andy Lambrechts , Chris Van Hoof

We report on the atom optical manipulation of an atom laser beam. Reflection, focusing and its storage in a resonator are demonstrated. Precise and versatile mechanical control over an atom laser beam propagating in an inhomogeneous…

凝聚态物理 · 物理学 2009-10-31 Immanuel Bloch , Michael Köhl , Markus Greiner , Theodor W. Hänsch , Tilman Esslinger

We present experimental light scattering measurements from aluminum surfaces obtained by cold rolling. We show that our results are consistent with a scale invariant description of the roughness of these surfaces. The roughness parameters…

其他凝聚态物理 · 物理学 2009-11-10 Damien Vandembroucq , Annie Tarrats , Jean-Jacques Greffet , Stephane Roux , Franck Plouraboue

We present a technique based on high resolution imaging to measure the absolute temperature and the heating rate of a single ion trapped at the focus of a deep parabolic mirror. We collect the fluorescence light scattered by the ion during…

A laser ablation system has been constructed and used to determine the damage threshold of stainless steel, rhodium and single-, poly- and nanocrystalline molybdenum in vacuum, at a number of wavelengths between 220 and 1064 nm using 5 ns…

仪器与探测器 · 物理学 2013-05-07 M. Wisse , L. Marot , B. Eren , R. Steiner , D. Mathys , E. Meyer

A brief perspective on light scattering in dense and cold atomic rubidium is presented. We particularly focus on the influence of auxiliary applied fields on the system response to a weak and nearly resonant probe field. Auxiliary fields…

原子物理 · 物理学 2015-09-08 R. G. Olave , A. L. Win , Kasie Kemp , S. J. Roof , S. Balik , M. D. Havey , I. M. Sokolov , D. V. Kupriyanov

We propose a method for optical nano-imaging in which the structure of a three-dimensional inhomogeneous medium may be recovered from far-field power measurements. Neither phase control of the illuminating field nor phase measurements of…

介观与纳米尺度物理 · 物理学 2017-02-02 Alexander A. Govyadinov , George Y. Panasyuk , John C. Schotland

Gallium oxide is an ultra-wide bandgap semiconductor with excellent opto-electronic properties, making it a highly promising material for a wide range of applications and devices. In this article, we report how the optical, morphological,…

A simple method for detection of melting event in laser-heated diamond anvil cells (DACs) is introduced. The melting is registered optically by the formation of spherical drops of the investigated material as heated in an inert pressure…

The optical interaction of light and matter is modeled as an oscillating dipole in a plane wave. We analyze absorption, scattering and extinction for this system by the energy flow, which is depicted by streamlines of the Poynting vector.…

光学 · 物理学 2018-09-05 Moritz Striebel , Jeff F. Young , Jörg Wrachtrup , Ilja Gerhardt

The performance of antennas can severely deteriorate in the presence of adjacent electrically-large scatterers. In this work, we use a conducting hollow cylinder to shield the scatterer. The cylinder is shelled with single layer dielectric…

光学 · 物理学 2023-08-24 Yi Zhang , Haiyan Fan , Yujie Zhang , Lixin Ran , Dexin Ye , Xudong Chen

In {\delta}-Ag2/3V2O5 with charge degrees of freedom in V, it is known that the charge ordering state and physical properties of V that appear at low temperatures depend strongly on the ordering state of Ag. In this study, we focused on the…

强关联电子 · 物理学 2024-03-13 T. Kubo , K. Kojima , N. Katayama , T. Runčevski , R. E. Dinnebier , A. S. Gibbs , M. Isobe , H. Sawa

Interferometric particle imaging is a widely used optical measuring technique for the sizing of poly-dispersed spherical particles like droplets and bubbles. In its conventional approach, the method is limited to forward-scattering angles…

流体动力学 · 物理学 2023-03-29 Christian Sax , Maximilian Dreisbach , Jochen Kriegseis

We study off-resonant collective light scattering from ultracold atoms trapped in an optical lattice. Scattering from different atomic quantum states creates different quantum states of the scattered light, which can be distinguished by…

量子物理 · 物理学 2007-11-22 Igor B. Mekhov , Christoph Maschler , Helmut Ritsch

We report a proof-of-principle experiment where the refractive index of an atomic vapor is enhanced while maintaining vanishing absorption of the beam. The key idea is to drive alkali atoms in a vapor with appropriate control lasers and…

量子物理 · 物理学 2009-01-09 N. A. Proite , B. E. Unks , J. T. Green , D. D. Yavuz