Surface-mediated non-linear optical effects in liquid crystals

Details Surface-mediated non-linear optical effects in liquid crystals Surface-mediated non-linear optical effects in liquid crystals

2007-12-05

arxiv.org/abs/0712.0767v1

Physics

Condensed Matter

Soft Condensed Matter

13 figures +latex file + bbl file in winzip file

Scientific paper

We make a phenomenological model of optical two-beam interaction in a model planar liquid crystal cell. The liquid crystal is subject to homeotropic anchoring at the cell walls, is surrounded by thin photosensitive layers, and is subject to a variable potential across the cell. These systems are often known as liquid crystal photorefractive systems. The interference between the two obliquely incident beams causes a time-independent periodic modulation in electric field intensity in the direction transverse to the cell normal. Our model includes this field phenomenologically by affecting the potential at the walls of the cell. The transverse periodic surface potential causes spatially periodic departures from a pure homeotropic texture. The texture modulation acts as a grating for the incident light. The incident light is both directly transmitted and also subject to diffraction. The first diffracted beams result in energy exchange between the beams. We find that the degree of energy exchange can be strongly sensitive to the mean angle of incidence, the angle between the beams, and the imposed potential across the cell. We use the model to speculate about what factors optimize non-linear optical interaction in liquid crystalline photorefractive systems.

Affiliated with

Also associated with

No associations

Rating

Surface-mediated non-linear optical effects in liquid crystals does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Surface-mediated non-linear optical effects in liquid crystals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface-mediated non-linear optical effects in liquid crystals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-311147