Z-SCAN MEASUREMENTS ON LIQUID-CRYSTALS - SOME CONSIDERATIONS AND RESULTS

Authors
PALFFYMUHORAY P WEI T ZHAO W
Citation
P. Palffymuhoray et al., Z-SCAN MEASUREMENTS ON LIQUID-CRYSTALS - SOME CONSIDERATIONS AND RESULTS, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 251, 1994, pp. 19-31
Citations number
10
Categorie Soggetti
Crystallography
Journal title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals → ACNP
ISSN journal
1058725X
Volume
251
Year of publication
1994
Pages
19 - 31
Database
ISI
SICI code
1058-725X(1994)251:<19:ZMOL-S>2.0.ZU;2-M
Abstract
Using the Z-scan technique, we study the intensity dependent response of liquid crystals in geometries where director reorientation is not e xpected. The dependence of Z-scan results on spatial beam profile is e xamined by comparison of results obtained from Gaussian and top-hat be ams. Effects of response times on the measured nonlinearities are also discussed. Physical mechanisms for the observed optical nonlinearitie s on the nanosecond timescale are proposed.