نتایج جستجو برای: optical polariser

تعداد نتایج: 266587  

Journal: :Journal of microscopy 2000
Geday Kaminsky Lewis Glazer

Modulation techniques for measuring changes in optical birefringence, such as the rotating-polariser method (Wood & Glazer, 1980, J. Appl. Crystallogr. 13, 217), allow one to determine |sin delta|, delta = 2piLDeltan/lambda, Deltan = double refraction, L = light path and lambda = wavelength. However, they generally suffer from not providing absolute values of the optical retardance or are limit...

2004
David J. Montgomery Graham J. Woodgate Adrian Jacobs Jonathan Harrold David Ezra

One recently reported approach to flat panel autostereoscopic 3D displays under investigation at Sharp Laboratories of Europe Ltd. (SLE) uses a high precision patterned optical half wave retarder combined with a re-configurable output polariser to “develop” a parallax barrier structure attached to an LCD display panel. Such a barrier is invisible without the polariser and thus a 2D/3D configura...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1389

چکیده ندارد.

2001
M. Wuilpart

We propose a new analysis method of the Rayleigh backscattered field for the measurement of the birefringence spatial distribution in a single-mode optical fiber. The technique is based on a Polarization-OTDR set-up using a rotary linear polariser. We demonstrate that the birefringence distribution may be deduced from the measurement of the round-trip Mueller matrices derived from three POTDR t...

2000
Jonathan Harrold Adrian M. S. Jacobs Graham J. Woodgate David Ezra

New three dimensional (3d) displays exploiting patterned retardation elements (i) external and (ii) internal to the LCD are discussed. The fabrication of a 13.8" diagonal patterned retardation element from reactive mesogen, which co-operates with a polariser to form a parallax barrier, is described. An electrically switching LC cell demonstration incorporating a polariser and retarder array ins...

2017
Rosario Martínez-Herrero David Maluenda Ignasi Juvells Artur Carnicer

Polarisers are one of the most widely used devices in optical set-ups. They are commonly used with paraxial beams that propagate in the normal direction of the polariser plane. Nevertheless, the conventional projection character of these devices may change when the beam impinges a polariser with a certain angle of incidence. This effect is more noticeable if polarisers are used in optical syste...

Journal: :Epj Web of Conferences 2022

We present the study of two polarisation state analysers. The first consists a camera with removable QWP, and second non-polarisation rotating QWP stationary linear polariser. theoretical analysis experiment focus on studying influence polarimeter optical components accuracy errors such as retardation errors, misalignments extinction ratio Stokes parameters precision. This research is cornersto...

Journal: :Scientific reports 2015
Xinyue Wang Freya Thomas Ziyu Wang

Optical couplers are very important devices in optical communication systems and optical sensor systems. Several types of optical couplers with different materials or different transmission characteristics have been reported. Here we propose a semi-reciprocal polarization maintaining fibre coupler with unique transmission characteristics, which is distinct from conventional polarization maintai...

Journal: :Proceedings of the Physical Society of London 1918

Journal: :Physical chemistry chemical physics : PCCP 2008
Nikolaus P Ernsting Jens Breffke Dmitry Yu Vorobyev David A Duncan Inga Pfeffer

The spectral evolution of fluorescence from 4-(dimethylamino)-4'-cyanostilbene (DCS) in methanol, and of two derivatives bearing either the anilino (ACS) or the julolidino (JCS) moiety, was measured by optical Kerr-gating with a time resolution of 0.35 ps. A special thin Glan polariser in the Kerr shutter allows high contrast without unnecessarily increasing the group delay dispersion. The emis...

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