Abstract
The first observation of photorefractivity in ferroelectric liquid crystals (flcs) is reported. The flcs are doped with the easily oxidized chromophore perylene, which also functions as the sensitizer. The electron acceptor di-butyl-pyromellitimide is added to induce photoconductivity through an efficient intermolecular electron transfer reaction to produce mobile ions. A strong dependence on the orientation of the wavevector of the optical interference pattern and polarization of the writing beams relative to the orientation of the flc molecules is observed. The results are interpreted as an orientational photorefractive effect in which the net polarization of the flc couples linearly to the space-charge field as opposed to nematic liquid crystals in which the dielectric anisotropy couples to the square of the space charge field.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of SPIE - The International Society for Optical Engineering |
| Publisher | Society of Photo-Optical Instrumentation Engineers |
| Pages | 104-109 |
| Number of pages | 6 |
| Volume | 4104 |
| DOIs | |
| Publication status | Published - 2000 |
| Event | Organic Photorefractives, Photoreceptors, and Nanocomposites - San Diego, CA, USA Duration: Jul 31 2000 → Aug 1 2000 |
Other
| Other | Organic Photorefractives, Photoreceptors, and Nanocomposites |
|---|---|
| City | San Diego, CA, USA |
| Period | 7/31/00 → 8/1/00 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Cite this
Photorefractivity in ferroelectric liquid crystals. / Wiederrecht, Gary P.; Wasielewski, Michael R; Fuller, Michael.
Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4104 Society of Photo-Optical Instrumentation Engineers, 2000. p. 104-109.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Photorefractivity in ferroelectric liquid crystals
AU - Wiederrecht, Gary P.
AU - Wasielewski, Michael R
AU - Fuller, Michael
PY - 2000
Y1 - 2000
N2 - The first observation of photorefractivity in ferroelectric liquid crystals (flcs) is reported. The flcs are doped with the easily oxidized chromophore perylene, which also functions as the sensitizer. The electron acceptor di-butyl-pyromellitimide is added to induce photoconductivity through an efficient intermolecular electron transfer reaction to produce mobile ions. A strong dependence on the orientation of the wavevector of the optical interference pattern and polarization of the writing beams relative to the orientation of the flc molecules is observed. The results are interpreted as an orientational photorefractive effect in which the net polarization of the flc couples linearly to the space-charge field as opposed to nematic liquid crystals in which the dielectric anisotropy couples to the square of the space charge field.
AB - The first observation of photorefractivity in ferroelectric liquid crystals (flcs) is reported. The flcs are doped with the easily oxidized chromophore perylene, which also functions as the sensitizer. The electron acceptor di-butyl-pyromellitimide is added to induce photoconductivity through an efficient intermolecular electron transfer reaction to produce mobile ions. A strong dependence on the orientation of the wavevector of the optical interference pattern and polarization of the writing beams relative to the orientation of the flc molecules is observed. The results are interpreted as an orientational photorefractive effect in which the net polarization of the flc couples linearly to the space-charge field as opposed to nematic liquid crystals in which the dielectric anisotropy couples to the square of the space charge field.
UR - http://www.scopus.com/inward/record.url?scp=0034497449&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0034497449&partnerID=8YFLogxK
U2 - 10.1117/12.406473
DO - 10.1117/12.406473
M3 - Conference contribution
VL - 4104
SP - 104
EP - 109
BT - Proceedings of SPIE - The International Society for Optical Engineering
PB - Society of Photo-Optical Instrumentation Engineers
ER -