Abstract
What is believed to be a novel phase-sensitive optical heterodyne interferometric ellipsometer is set up to characterize a twisted-nematic liquid crystal (TN-LC) by the elliptical parameters of the output polarization state. This ellipsometer presents the advantages of both polarized optical heterodyne interferometry and optical photometry, which introduce a polarization modulation that is capable of performing with high-sensitivity on phase detection in real time. The twist angle Φ and the untwisted phase retardation Γ of TN-LC are measured precisely. The experimental results verify that a TN-LC can be treated as identical to an elliptical retarder.
© 2005 Optical Society of America
Full Article | PDF ArticleMore Like This
Hsiang-Chun Wei, Chien-Chung Tsai, Li-Ping Yu, Tsu-En Lin, Chi-Jen Yu, Meng-Han Liu, and Chien Chou
Appl. Opt. 48(9) 1628-1634 (2009)
Hyun Kim and Yeon H. Lee
Appl. Opt. 44(9) 1642-1649 (2005)
Wen-chi Hung, Ming-shan Tsai, Chien-ren Wang, I-min Jiang, and Wood-hi Cheng
Appl. Opt. 46(17) 3493-3497 (2007)