Liquid Crystal Polarizers with Axially Symmetrical Properties

Yamaguchi, Rumiko; Nose, Toshiaki; Sato, Susumu

doi:10.1143/jjap.28.1730

Cited by 79 publications

(30 citation statements)

References 2 publications

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“…One example is devices with Twisted Nematic (TN) LC molecules sandwiched between a linearly and a circularly rubbed plates. 10,11 Due to the circular rubbing of the second plate, the TN LC molecules continuously rotates from the initial linear rubbing direction to the corresponding spatially distributed rubbing direction on the other plate. An incident beam that is linearly polarized perpendicular or parallel to the linear rubbing direction will follow the molecule rotation, creating a radial or azimuthal polarization on the exiting side.…”

Section: Passive Generation Methods In Free Spacementioning

confidence: 99%

Chapter 1: Cylindrical Vector Beams

Zhan

2013

Vectorial Optical Fields

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Cylindrical vector beams are considered one special class of optical vector fields as the axially symmetric beam solution to the full vector electromagnetic wave equation. In this chapter, a brief introduction of the mathematical and graphical descriptions of the cylindrical vector beams will be provided. Various active and passive methods to generate these cylindrical vector beams are reviewed. Expressions for the focal field distributions of the cylindrical vector beams focused by high numerical aperture objective lens are derived. The cylindrical polarization symmetry of this special class of optical vector beams gives rise to unique focusing properties under high numerical aperture condition with important applications including optical imaging and manipulation.

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Section: Passive Generation Methods In Free Spacementioning

confidence: 99%

Chapter 1: Cylindrical Vector Beams

Zhan

2013

Vectorial Optical Fields

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“…The lc filter with such an alignment of the lc layer has been described already by Sato and others [5]. Unfortunately the transmission has not been described theoretically in there.…”

Section: Filter Arrangement and Topic Inspirationmentioning

confidence: 98%

Polarisation sensitive liquid crystalline filter

Walczak¹,

Wal²

2004

Molecular Crystals and Liquid Crystals

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The liquid crystalline (lc) filter which creates the distributed form of a light transmission has been described in detail. Distribution of the transmission in considered filter may be altered by means of an incident light polarization.The applied alignment of the liquid crystal layer is arranged in such a way, that on the one side, inside the filter, the lc layer is aligned as planar, while on the opposite side of the filter it is aligned in form of circles. The filter basis is so called adiabatic following in a twisted nematic lc layer (Mauguin regime). As Mauguin regime is fulfilled then the specific lc layer alignment causes polarization sensitive transmission. Such filter seems to provide new possibilities in a polarisation difference image analysis so may be convenient tool for a polarimetric image processing.

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“…It is called CH hybrid lc layer. Sato and others described such an alignment earlier 3 . Up to now they exploit circular-planar alignment to different task 4 .…”

Section: Introductionmentioning

confidence: 94%

Polarisation sensitive liquid crystal filter for polarization difference imaging

Walczak¹,

Nowinowski-Kruszelnicki²

2005

SPIE Proceedings

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The liquid crystal (lc) filter, which produces distributed form of light transmission, has been described. Distribution of the transmitted intensity may be altered in filter window by means of an incident light polarization. To obtain such polarization sensitive transmission the special alignment of a liquid crystal layer is arranged in such a way, that on the one side, inside the filter, the lc layer has been aligned as planar or homeotropic, while on the opposite side of the filter it stay aligned in form of circles. Such liquid crystal cell may be called circular -homogeneous or circular homeotropic (CH LC). The filter transmission basis is adiabatic following in a twisted nematic lc layer (Mauguin regime). As Mauguin regime is fulfilled then CH alignment causes polarization sensitive transmission. Such filter provides new possibilities in a polarisation difference image analysis so may be convenient tool for a polarimetric image processing. Numerical simulation of the transmission has been presented as well as the experimental results. Even if Maugin regime is fulfil the examined filter transmission depends on the transmitted spectrum to some extent. It has been analyzed and potential application of this property of the filter has been discussed too.

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Liquid Crystal Polarizers with Axially Symmetrical Properties

Cited by 79 publications

References 2 publications

Chapter 1: Cylindrical Vector Beams

Chapter 1: Cylindrical Vector Beams

Polarisation sensitive liquid crystalline filter

Polarisation sensitive liquid crystal filter for polarization difference imaging

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