Abstract

Liquid crystal variable retarders (LCVRs) are starting to be widely used in optical systems because of their capacity to provide a controlled variable optical retardance between two orthogonal components of incident polarized light or to introduce a known phase shifting (PS) between coherent waves, both by means of an applied voltage. Typically, the retardance or PS introduced by an LCVR is not homogeneous across the aperture. On the one hand, the LCVR glass substrates present a global bend that causes an overall variation of the retardance or PS. On the other hand, in the manufacturing process of an LCVR, there sometimes appears a set of micro-air bubbles that causes local retardance or PS inhomogeneities. In this work, we present an interferometric technique based on a Mach–Zehnder interferometer that is insensitive to vibrations and capable of inspecting and characterizing the LCVR’s retardance or PS inhomogeneities. The feasibility of the proposed method is demonstrated in the experimental results, where the LCVR retardance is measured with an error of about 0.2rad. The thickness of possible micro-air bubbles is obtained with a resolution of about 50nm.

© 2010 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Liquid-crystal variable retarders for aerospace polarimetry applications

R. L. Heredero, N. Uribe-Patarroyo, T. Belenguer, G. Ramos, A. Sánchez, M. Reina, V. Martínez Pillet, and A. Álvarez-Herrero
Appl. Opt. 46(5) 689-698 (2007)

Adjustment method of an imaging Stokes polarimeter based on liquid crystal variable retarders

Władysław A. Woźniak, Piotr Kurzynowski, and Sławomir Drobczyński
Appl. Opt. 50(2) 203-212 (2011)

Imaging Stokes polarimeter based on a single liquid crystal variable retarder

Władysław A. Woźniak, Marzena Prętka, and Piotr Kurzynowski
Appl. Opt. 54(20) 6177-6181 (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

Tables (2)

You do not have subscription access to this journal. Article tables 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 (8)

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