LANGEVIN TYPE ALIGNMENT IN A SMECTIC LIQUID-CRYSTAL MIXTURE SHOWING V-SHAPED SWITCHING AS STUDIED BY OPTICAL 2ND-HARMONIC GENERATION

Authors
SEOMUN SS PARK B CHANDANI ADL HERMANN DS TAKANISHI Y ISHIKAWA K TAKEZOE H FUKUDA A
Citation
Ss. Seomun et al., LANGEVIN TYPE ALIGNMENT IN A SMECTIC LIQUID-CRYSTAL MIXTURE SHOWING V-SHAPED SWITCHING AS STUDIED BY OPTICAL 2ND-HARMONIC GENERATION, JPN J A P 2, 37(6B), 1998, pp. 691-693
Citations number
20
Categorie Soggetti
Physics, Applied
Journal title
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS → ACNP
Volume
37
Issue
6B
Year of publication
1998
Pages
691 - 693
Database
ISI
SICI code
Abstract
Second-harmonic generation (SHG) was observed in a homogeneously align ed smectic C-like liquid crystal (LC) cell showing V-shaped switching during the application of a triangular wave. At normal incidence of l ight, abnormally strong SHG signals were observed at about zero electr ic field. It was confirmed that this phenomenon is characteristic in L Cs showing the V-shaped switching, and is not observable in typical fe rroelectric and antiferroelectric LCs. The dynamic response of SHG was successfully simulated using the two-dimensional Langevin type potent ial model.