Phase modulation and ellipticity of the light transmitted through a smectic C* layer with short helix pitch

Pozhidaev, E. P.; Torgova, S. I.; Minchenko, Maxim V.; Yednak, C. A. R.; Strigazzi, Alfredo; Miraldi, Elio

doi:10.1080/02678292.2010.486482

Cited by 30 publications

(56 citation statements)

References 15 publications

(31 reference statements)

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“…The latter implies that normally incident light feels only uniaxial in-plane anisotropy in agreement with the recent results on the ellipticity of light transmitted through a DHFLC cell [40].…”

Section: Discussionsupporting

confidence: 79%

“…So, loci of extrema (minima and maxima) of the transmittance, T xy , can be used to obtain dependence of the birefringence on the applied electric field (more details on this method can be found, for example, in Refs. [40,43]). Figure 8 shows the results for the field dependence of the electrically controlled birefringence, n eff (E) − n eff (0), measured for the mixture FLC-576A.…”

Section: Experimental Results and Modelingmentioning

confidence: 99%

“…Note that our calculations of the averaged dielectric tensor rely on the approximate expression for the azimuthal angle (40) which is applicable for sufficiently low voltages. A more accurate description of the DHFLC orientational structure is required when the voltage increases approaching the unwinding transition [50].…”

Section: Discussionmentioning

confidence: 99%

“…As in Ref. [40], in order to obtain a nearly defectless DHF structure, the cells were subjected to an alternate electrical training.…”

Section: Materials and Sample Preparationmentioning

confidence: 99%

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Polarization-gratings approach to deformed-helix ferroelectric liquid crystals with subwavelength pitch

et al. 2011

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Electro-optical properties of deformed helix ferroelectric liquid crystal (DHFLC) cells are studied by using a general theoretical approach to polarization gratings in which the transmission and reflection matrices of diffraction orders are explicitly related to the evolution operator of equations for the Floquet harmonics. In the short-pitch approximation, a DHFLC cell is shown to be optically equivalent to a uniformly anisotropic biaxial layer where one of the optical axes is normal to the bounding surfaces. For in-plane anisotropy, orientation of the optical axes and birefringence are both determined by the voltage applied across the cell and represent the parameters that govern the transmittance of normally incident light passing through crossed polarizers. We calculate the transmittance as a function of the electric field and compare the computed curves with the experimental data. The theoretical and experimental results are found to be in good agreement.

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Section: Discussionsupporting

confidence: 79%

Section: Experimental Results and Modelingmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…As in Ref. [40], in order to obtain a nearly defectless DHF structure, the cells were subjected to an alternate electrical training.…”

Section: Materials and Sample Preparationmentioning

confidence: 99%

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Polarization-gratings approach to deformed-helix ferroelectric liquid crystals with subwavelength pitch

et al. 2011

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“…The electrically controlled birefringence n eff (E) = <n e (E) n o (E)> is a sequence of the FLC helical structure deformation and deviation of the FLC principle axis in electric field [1,2,9,10], see At sub-wavelength helix pitch, the light transmission T h of the DHFLC placed between crossed polarizers is expressed as [9][10][11]:…”

mentioning

confidence: 99%

Smectic nanostructures with typical size less than the visible light wavelength: physics and electro-optics

Pozhidaev

Molkin

Chigrinov

2011

Photon. Lett. Poland

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Ferroelectric liquid crystals: Excellent tool for modern displays and photonics

2015

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The ferroelectric liquid crystals, because of their fast electro‐optical response, are one of the most important classes of liquid crystals. Here, in this review, we have summarized the different electro‐optical modes for ferroelectric liquid crystals. Clark–Lagerwall effect (surface stabilized ferroelectric liquid crystal), deformed helix ferroelectric (DHF) effect, electrically suppressed helix (ESH) mode, DHF orientational Kerr effect, and ESH diffraction modes have been discussed. All of the crucial features, that is, optics, electro‐optics, dynamics, and their dependence on material parameters, operational regime, and applications, have been reviewed.

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Phase modulation and ellipticity of the light transmitted through a smectic C* layer with short helix pitch

Cited by 30 publications

References 15 publications

Polarization-gratings approach to deformed-helix ferroelectric liquid crystals with subwavelength pitch

Polarization-gratings approach to deformed-helix ferroelectric liquid crystals with subwavelength pitch

Smectic nanostructures with typical size less than the visible light wavelength: physics and electro-optics

Ferroelectric liquid crystals: Excellent tool for modern displays and photonics

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