The Influence of the Finite Size of the Light Spot on the Laser Induced Reorientation of Liquid Crystals

Cšillag, L.; Jánossy, I.; Kitaeva, V. F.; Kroó, N.; Соболев, Н. Н.

doi:10.1080/00268948208072136

Cited by 39 publications

(1 citation statement)

References 7 publications

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“…Despite that, some comments on the experiments can be made in this regard. In our case the disturbed area in the sample for a focused beam is larger than the laser spot due to long-range elastic interactions in the nematic (just as in the case of the static optical Fréedericksz transition with finite beam size, where the director distortion has an essentially longer range than the laser diameter [29,30]). Therefore, we assert that disclination loops are nucleated in a larger area then the scattered one.…”

Section: Analysis Of Light Scatteringmentioning

confidence: 99%

Laser-induced instabilities in liquid crystal cells with a photosensitive substrate

et al. 2014

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Liquid crystal layers sandwiched between a reference plate and a photosensitive substrate were investigated. We focused on the reverse geometry, where the cell was illuminated by a laser beam from the reference side. In planar cells both static and dynamic instabilities occurred, depending on the angle between the laser polarization and the director orientation on the reference plate. In cells where the molecules were aligned along the normal of the reference plate, a dynamic pattern was observed at all angles of polarization. A simple model based on a photoinduced surface torque accounts for the findings. Light scattering studies revealed some basic properties of the instabilities.

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Section: Analysis Of Light Scatteringmentioning

confidence: 99%