OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 42, Iss. 13 — May. 1, 2003
  • pp: 2366–2371

Complex refractive-index spectrum of liquid crystal in the infrared

Mitsunori Saito and Teruyuki Yasuda  »View Author Affiliations

Applied Optics, Vol. 42, Issue 13, pp. 2366-2371 (2003)

View Full Text Article

Enhanced HTML    Acrobat PDF (140 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



The ordinary and extraordinary complex refractive indices, n o - jκ o and n e - jκ e , of a nematic liquid crystal were measured in the infrared region at 3.0–11.5-µm wavelength. The complex refractive indices were evaluated in terms of the angular dependence of the reflectance. Semicylindrical CsI prisms and a goniometer were used for measurement of the reflectance in a wide incident-angle range and throughout the wide infrared spectral region. Refractive indices n o and n e changed notably near the absorption wavelength. Negative birefringence, i.e., n e < n o , was observed in the vicinity of 6.6 µm, where n e changed more than did n o .

© 2003 Optical Society of America

OCIS Codes
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(120.5700) Instrumentation, measurement, and metrology : Reflection
(160.3710) Materials : Liquid crystals
(260.1440) Physical optics : Birefringence
(260.3060) Physical optics : Infrared

Original Manuscript: November 19, 2001
Revised Manuscript: October 3, 2003
Published: May 1, 2003

Mitsunori Saito and Teruyuki Yasuda, "Complex refractive-index spectrum of liquid crystal in the infrared," Appl. Opt. 42, 2366-2371 (2003)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. A. F. Fray, C. Hilsum, D. Jones, “Some properties of liquid crystals as infrared modulators,” Infrared Phys. 18, 35–41 (1978). [CrossRef]
  2. J. G. Pasko, J. Tracy, W. Elser, “Liquid crystal infrared modulation,” Opt. Eng. 20, 970–975 (1981). [CrossRef]
  3. R. C. Sharp, D. P. Resler, D. S. Hobbs, T. A. Dorschner, “Electrically tunable liquid-crystal wave plate in the infrared,” Opt. Lett. 15, 87–89 (1990). [CrossRef] [PubMed]
  4. J. Kobayashi, J. Kita, K. Yoshino, “The light-chopper for infrared detection utilizing ferroelectric liquid crystal,” Trans. Inst. Electron. Inform. Commun. Eng. C-I J79, 240–248 (1996).
  5. S. T. Wu, U. Efron, L. D. Hess, “Infrared birefringence of liquid crystals,” Appl. Phys. Lett. 44, 1033–1035 (1984). [CrossRef]
  6. D. B. Chenault, R. A. Chipman, K. M. Johnson, D. Doroski, “Infrared linear diattenuation and birefringence spectra of ferroelectric liquid crystals,” Opt. Lett. 17, 447–449 (1992). [CrossRef] [PubMed]
  7. M. Saito, N. Matsumoto, J. Nishimura, “Measurement of the refractive-index spectrum for birefringent and absorptive liquids,” Appl. Opt. 37, 5169–5175 (1998). [CrossRef]
  8. Chisso Corporation, Lixon Information, catalog (Chisso Corporation, Chiba, Japan, 1995).
  9. M. Saito, K. Nakajima, M. Shishido, “Polymer coating on infrared silver halide fiber for photo-darkening protection,” J. Lightwave Technol. 20, 441–447 (2002). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.


Fig. 1 Fig. 2 Fig. 3
Fig. 4 Fig. 5

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited