Abstract

It has been demonstrated that, with the use of a standard rotating analyzer ellipsometer, generalized transmission ellipsometry (GTE) is able to uniquely determine the molecular tilt profile of a commercial nematic liquid crystal variable retarder (LCVR) with applied voltage. Also, the presence of the tilted anisotropic layer permits us to determine, solely with GTE measurements, both the ordinary and extraordinary indices of refraction of the liquid crystal. The isotropic layers of the LCVR, which are of no interest in this kind of measurement, can be completely omitted during modeling. The sensitivities of the technique to the determination of the ordinary index of refraction, the difference between ordinary and extraordinary indices of refraction, and tilt profile are discussed with strategies to improve the three. Previous measurements using guided modes that require special LCVR cells, or the complete modelling of the device due to the use of transmission and reflection data, are in agreement with the results obtained in this paper.

© 2009 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Generalized transmission ellipsometry for twisted biaxial dielectric media: application to chiral liquid crystals

Mathias Schubert, Bernd Rheinländer, Christiane Cramer, Herbert Schmiedel, John A. Woollam, Craig M. Herzinger, and Blaine Johs
J. Opt. Soc. Am. A 13(9) 1930-1940 (1996)

Simplified physical modeling of parallel-aligned liquid crystal devices at highly non-linear tilt angle profiles

Jorge Francés, Andrés Márquez, Francisco J. Martínez-Guardiola, Sergio Bleda, Sergi Gallego, Cristian Neipp, Inmaculada Pascual, and Augusto Beléndez
Opt. Express 26(10) 12723-12741 (2018)

Characterization of voltage-driven twisted nematic liquid crystal cell by dynamic polarization scanning ellipsometry

Huan-Hsu Lin, Quoc-Hung Phan, and Yu-Lung Lo
Opt. Express 23(8) 10213-10223 (2015)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (11)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription