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The polarization of light is a critically under-utilized, rich source of information in astronomy. For stars in particular, surface magnetism polarization that can be detected and measured with spectro-polarimetry. Many questions about…

The Mueller Matrix Polar Decomposition method decomposes a Mueller matrix into a diattenuator, a retarder, and a depolarizer. Among these elements, the retarder, which plays a key role in medical and material characterization, is modelled…

We developed a specific numerical fitting procedure, based on the least squares method, to calculate the parameters of the polarization ellipse by only using a single polarizer and a detection device for measuring the outgoing intensities.

光学 · 物理学 2007-05-23 Aleksandar Gjurchinovski

Accurate and fast 3D imaging of specular surfaces still poses major challenges for state-of-the-art optical measurement principles. Frequently used methods, such as phase-measuring deflectometry (PMD) or shape-from-polarization (SfP), rely…

计算机视觉与模式识别 · 计算机科学 2024-06-05 Jiazhang Wang , Oliver Cossairt , Florian Willomitzer

We present two backscattering polarimetric scanning setups based on point-illumination schemes, that are designed to probe the optical properties of subsurface media. We describe their advantages and limitations, characterize their…

光学 · 物理学 2026-05-28 Bhanu P. Singh , Vladislav Stefanov , Nadine A. Coorens , Andre Stefanov

Polarization is a fundamental property of light that carries distinct and valuable information. Consequently, its precise measurement is crucial for numerous applications, including biomedical imaging, remote sensing, and optical…

We have described a novel way to determine the Mueller matrix of any optical element by using projection method. For this purpose, we have used two universal SU(2) gadgets for polarization optics to obtain projection matrix directly from…

A new real space quantum mechanical approach with local field effects included is applied to the calculation of the optical properties of silicon nanocrystals. Silicon ellipsoids are studied and the role of surface polarization is discussed…

材料科学 · 物理学 2007-07-11 F. Trani

Light emitted from a source into a scene can undergo complex interactions with scene surfaces of different material types before being reflected. During this transport, every surface reflection is encoded in the properties of the photons…

计算机视觉与模式识别 · 计算机科学 2021-09-16 Seung-Hwan Baek , Felix Heide

The use of polarimetric techniques is nowadays widespread among solar and stellar astronomers. However, notwithstanding the recommandations that have often been made about the publication of polarimetric results in the astronomical…

天体物理学 · 物理学 2007-05-23 E. Landi Degl'Innocenti , S. Bagnulo , L. Fossati

Optical spectroscopy is indispensable for research and development in nanoscience and nanotechnology, microelectronics, energy, and advanced manufacturing. Advanced optical spectroscopy tools often require both specifically designed…

光学 · 物理学 2022-10-12 Ziyang Wang , Yuxuan Cosmi Lin , Kunyan Zhang , Wenjing Wu , Shengxi Huang

Polarized light microscopy provides unique opportunities for analyzing the molecular order in man-made and natural materials, including biological structures inside living cells, tissues, and whole organisms. 20 years ago, the LC-PolScope…

光学 · 物理学 2015-06-16 Shalin B. Mehta , Michael Shribak , Rudolf Oldenbourg

Context: Polarimetry is a very powerful tool to uncover various properties of astronomical objects that remain otherwise hidden in standard imaging or spectroscopic observations. However, the reliable measurement of the low polarization…

天体物理仪器与方法 · 物理学 2020-02-12 S. González-Gaitán , A. M. Mourão , F. Patat , J. P. Anderson , A. Cikota , K. Wiersema , A. B. Higgins , K. Silva

The paper investigates the ellipsometric method of measuring the magneto-optical parameter and optical constants in one experiment at affixed angle of the light incidence in ferromagnetics. The influence of the magnetization modulation on…

光学 · 物理学 2009-09-17 Otar Bakradze* , Zurab Alimbarashvili , Rusiko Janelidze

We review the algebraic definition of the efficiency of a polarization modulation scheme, which is commonly adopted for solar and stellar spectro-polarimetry applications, and generalize it to allow distinct states of the modulation cycle…

天体物理仪器与方法 · 物理学 2026-02-17 Roberto Casini , David M. Harrington , Alfred G. de Wijn

We propose a precise ellipsometric method for the investigation of coherent light with a small ellipticity. The main feature of this method is the use of compensators with phase delays providing the maximum accuracy of measurements for the…

仪器与探测器 · 物理学 2017-06-21 Nazar Al-wassiti , Evelina Bibikova , Nataliya Kundikova

Optics labs are an integral part of the advanced curriculum for physics majors. Students majoring in other disciplines, like chemistry, biology or engineering rarely have the opportunity to learn about the most recent optical techniques and…

物理教育 · 物理学 2011-11-10 Georgi Georgiev , Thomas Slavkovsky

The formalism is developed for a tree-dimensional ($3D$) nonlinear Stokes-Mueller polarimetry. The expressions are derived for the generalized $3D$ linear and nonlinear Stokes vectors, and the corresponding nonlinear Mueller matrix. The…

综合物理 · 物理学 2024-01-17 Serguei Krouglov , Virginijus Barzda

Two different formalisms for the homogenization of composite materials containing ellipsoidal inclusions based on Bruggeman's original formula for spherical inclusions can be found in the literature. Both approximations determine the…

光学 · 物理学 2013-09-13 Daniel Schmidt , Mathias Schubert

Linear polarimetric transformations of light polarization states by the action of material media are fully characterized by the corresponding Mueller matrices, which contain in an implicit and intricate manner all measurable information on…

光学 · 物理学 2022-02-16 José J. Gil , Ignacio San José