Abstract
We present a detailed theoretical discussion of the fundamental mechanisms for the recently observed nonlinear electro-optical effects in nematic liquid crystal films. Detailed expressions for the three principal mechanisms for space charge fields formation and various dielectric, conductivity and flow induced torques that are responsible for the liquid crystal director axis reorientation process are derived. We have observed strong optical wave mixing effects such as two-beam energy coupling and self-diffraction; the observed effects, their magnitude and dynamics, and dependencies on various physical parameters are found to be in good agreement with theories.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 525-534 |
| Number of pages | 10 |
| Journal | IEEE Journal of Quantum Electronics |
| Volume | 32 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 1 1996 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering
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Orientational photorefractive effects in nematic liquid crystal films. / Khoo, Iam-choon.
In: IEEE Journal of Quantum Electronics, Vol. 32, No. 3, 01.03.1996, p. 525-534.Research output: Contribution to journal › Article
TY - JOUR
T1 - Orientational photorefractive effects in nematic liquid crystal films
AU - Khoo, Iam-choon
PY - 1996/3/1
Y1 - 1996/3/1
N2 - We present a detailed theoretical discussion of the fundamental mechanisms for the recently observed nonlinear electro-optical effects in nematic liquid crystal films. Detailed expressions for the three principal mechanisms for space charge fields formation and various dielectric, conductivity and flow induced torques that are responsible for the liquid crystal director axis reorientation process are derived. We have observed strong optical wave mixing effects such as two-beam energy coupling and self-diffraction; the observed effects, their magnitude and dynamics, and dependencies on various physical parameters are found to be in good agreement with theories.
AB - We present a detailed theoretical discussion of the fundamental mechanisms for the recently observed nonlinear electro-optical effects in nematic liquid crystal films. Detailed expressions for the three principal mechanisms for space charge fields formation and various dielectric, conductivity and flow induced torques that are responsible for the liquid crystal director axis reorientation process are derived. We have observed strong optical wave mixing effects such as two-beam energy coupling and self-diffraction; the observed effects, their magnitude and dynamics, and dependencies on various physical parameters are found to be in good agreement with theories.
UR - http://www.scopus.com/inward/record.url?scp=0030106548&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030106548&partnerID=8YFLogxK
U2 - 10.1109/3.485406
DO - 10.1109/3.485406
M3 - Article
AN - SCOPUS:0030106548
VL - 32
SP - 525
EP - 534
JO - IEEE Journal of Quantum Electronics
JF - IEEE Journal of Quantum Electronics
SN - 0018-9197
IS - 3
ER -