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Polarization properties of cubic blue phases of a cholesteric liquid crystal

(2017) OPTICAL MATERIALS. 69. p.259-264
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Abstract
In this paper, we have experimentally investigated polarization properties of the blue phase of a cholesteric liquid crystal in polycrystalline cells with different alignment layers. Experiments were carried out by various temperatures and wavelengths within the spectral range covering Bragg reflection. It was conclusively demonstrated that the change of polarization state of transmitted light through polycrystalline BP-cell is mainly due to Bragg reflection, while optical activity is relatively small. Besides, the linear birefringence was not observed, as expected. It was shown that the ellipticity of the outgoing polarization state can change from almost linear (1.33%) to elliptic (7.33%), depending on sample orientation, with negligible changing of optical rotatory power (for BP I at 470 nm). The results indicate that also polycrystalline BPLC structure, although locally anisotropic, is macroscopically isotropic showing non-negligible optical activity only for resonant wavelengths, although being much lower than that in a typical cholesteric phase. It was also shown that different alignment layers in BP-cell may shift Bragg reflection spectral range, so influencing the outgoing polarization state for particular wavelength.
Keywords
Liquid crystal, Chiral media, Blue phase liquid crystal, Optical properties

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MLA
Orzechowski, Kamil et al. “Polarization Properties of Cubic Blue Phases of a Cholesteric Liquid Crystal.” OPTICAL MATERIALS 69 (2017): 259–264. Print.
APA
Orzechowski, K., Sierakowski, M. W., Sala-Tefelska, M., Joshi, P., Woliński, T. R., & De Smet, H. (2017). Polarization properties of cubic blue phases of a cholesteric liquid crystal. OPTICAL MATERIALS, 69, 259–264.
Chicago author-date
Orzechowski, Kamil, Marek W Sierakowski, Marzena Sala-Tefelska, Pankaj Joshi, Tomasz R Woliński, and Herbert De Smet. 2017. “Polarization Properties of Cubic Blue Phases of a Cholesteric Liquid Crystal.” Optical Materials 69: 259–264.
Chicago author-date (all authors)
Orzechowski, Kamil, Marek W Sierakowski, Marzena Sala-Tefelska, Pankaj Joshi, Tomasz R Woliński, and Herbert De Smet. 2017. “Polarization Properties of Cubic Blue Phases of a Cholesteric Liquid Crystal.” Optical Materials 69: 259–264.
Vancouver
1.
Orzechowski K, Sierakowski MW, Sala-Tefelska M, Joshi P, Woliński TR, De Smet H. Polarization properties of cubic blue phases of a cholesteric liquid crystal. OPTICAL MATERIALS. Elsevier BV; 2017;69:259–64.
IEEE
[1]
K. Orzechowski, M. W. Sierakowski, M. Sala-Tefelska, P. Joshi, T. R. Woliński, and H. De Smet, “Polarization properties of cubic blue phases of a cholesteric liquid crystal,” OPTICAL MATERIALS, vol. 69, pp. 259–264, 2017.
@article{8531198,
  abstract     = {{In this paper, we have experimentally investigated polarization properties of the blue phase of a cholesteric liquid crystal in polycrystalline cells with different alignment layers. Experiments were carried out by various temperatures and wavelengths within the spectral range covering Bragg reflection. It was conclusively demonstrated that the change of polarization state of transmitted light through polycrystalline BP-cell is mainly due to Bragg reflection, while optical activity is relatively small. Besides, the linear birefringence was not observed, as expected. It was shown that the ellipticity of the outgoing polarization state can change from almost linear (1.33%) to elliptic (7.33%), depending on sample orientation, with negligible changing of optical rotatory power (for BP I at 470 nm). The results indicate that also polycrystalline BPLC structure, although locally anisotropic, is macroscopically isotropic showing non-negligible optical activity only for resonant wavelengths, although being much lower than that in a typical cholesteric phase. It was also shown that different alignment layers in BP-cell may shift Bragg reflection spectral range, so influencing the outgoing polarization state for particular wavelength.}},
  author       = {{Orzechowski, Kamil and Sierakowski, Marek W and Sala-Tefelska, Marzena and Joshi, Pankaj and Woliński, Tomasz R and De Smet, Herbert}},
  issn         = {{0925-3467}},
  journal      = {{OPTICAL MATERIALS}},
  keywords     = {{Liquid crystal,Chiral media,Blue phase liquid crystal,Optical properties}},
  language     = {{eng}},
  pages        = {{259--264}},
  publisher    = {{Elsevier BV}},
  title        = {{Polarization properties of cubic blue phases of a cholesteric liquid crystal}},
  url          = {{http://dx.doi.org/10.1016/j.optmat.2017.04.051}},
  volume       = {{69}},
  year         = {{2017}},
}

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