OSA's Digital Library

Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 1, Iss. 5 — May. 5, 2006

Voltage-controlled liquid-crystal terahertz phase shifter and quarter-wave plate

Cho-Fan Hsieh, Ru-Pin Pan, Tsung-Ta Tang, Hung-Lung Chen, and Ci-Ling Pan  »View Author Affiliations

Optics Letters, Vol. 31, Issue 8, pp. 1112-1114 (2006)

View Full Text Article

Enhanced HTML    Acrobat PDF (286 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Phase shift exceeding π 2 at 1 THz is demonstrated by using electrically controlled birefringence in a homeotropically aligned nematic liquid crystal (E7) cell, 570 μ m in thickness. The driving voltage required for a phase shift of 90° is 125 V (rms). We demonstrate that the phase shifter works as an electrically switchable quarter-wave plate at 1 THz . The device can also be used as an electrically tuned phase compensator around the quarter-wave point near 1 THz .

© 2006 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(230.3720) Optical devices : Liquid-crystal devices
(260.3090) Physical optics : Infrared, far
(260.5430) Physical optics : Polarization
(320.0320) Ultrafast optics : Ultrafast optics

ToC Category:
Optical Devices

Original Manuscript: November 7, 2005
Revised Manuscript: January 2, 2006
Manuscript Accepted: January 9, 2006

Virtual Issues
Vol. 1, Iss. 5 Virtual Journal for Biomedical Optics

Cho-Fan Hsieh, Ru-Pin Pan, Tsung-Ta Tang, Hung-Lung Chen, and Ci-Ling Pan, "Voltage-controlled liquid-crystal terahertz phase shifter and quarter-wave plate," Opt. Lett. 31, 1112-1114 (2006)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. D. Grischkowsky, S. R. Keiding, M. V. Exter, and C. Fattinger, J. Opt. Soc. Am. B 7, 2006 (1990). [CrossRef]
  2. B. Ferguson and X.-C. Zhang, Nat. Mater. 1, 26 (2002). [CrossRef]
  3. D. Mittleman, Sensing with THz Radiation (Springer, 2002).
  4. I. H. Libon, S. Baumgärtner, M. Hempel, N. E. Hecker, J. Feldmann, M. Koch, and P. Dawson, Appl. Phys. Lett. 76, 2821 (2000). [CrossRef]
  5. R. Kersting, G. Strasser, and K. Unterrainer, Electron. Lett. 36, 1156 (2000). [CrossRef]
  6. T. Kleine-Ostmann, P. Dawson, K. Pierz, G. Hein, and M. Koch, Appl. Phys. Lett. 84, 3555 (2004). [CrossRef]
  7. K. C. Lim, J. D. Margerum, and A. M. Lackner, Appl. Phys. Lett. 62, 1065 (1993). [CrossRef]
  8. T.-R. Tsai, C.-Y. Chen, C.-L. Pan, R.-P. Pan, and X.-C. Zhang, Appl. Opt. 42, 2372 (2003). [CrossRef] [PubMed]
  9. R.-P. Pan, T.-R. Tsai, C.-Y. Chen, C.-H. Wang, and C.-L. Pan, Mol. Cryst. Liq. Cryst. 409, 137 (2004). [CrossRef]
  10. C.-Y. Chen, T.-R. Tsai, C.-L. Pan, and R.-P. Pan, Appl. Phys. Lett. 83, 4497 (2003). [CrossRef]
  11. C.-Y. Chen, C.-F. Hsieh, Y.-F. Lin, R.-P. Pan, and C.-L. Pan, Opt. Express 12, 2630 (2004).
  12. T.-R. Tsai, C.-Y. Chen, R.-P. Pan, C.-L. Pan, and X.-C. Zhang, IEEE Microw. Wirel. Compon. Lett. 14, 77 (2004). [CrossRef]
  13. F. J. Kahn, Appl. Phys. Lett. 22, 386 (1973). [CrossRef]
  14. P. G. de Gennes and J. Prost, The Physics of Liquid Crystals, 2nd ed. (Oxford, 1983).
  15. S. Chandrasekhar, Liquid Crystal, 2nd ed. (Cambridge, 1992). [CrossRef]
  16. C.-L. Pan, C.-F. Hsieh, R.-P. Pan, M. Tanaka, F. Miyamaru, M. Tani, and M. Hangyo, Opt. Express 13, 3921 (2005). [CrossRef] [PubMed]
  17. E. Hecht, Optics, 3rd ed. (Addison Wesley-Longman, 1998).
  18. K. Skarp, S. T. Lagerwall, and B. Stebler, Mol. Cryst. Liq. Cryst. 60, 215 (1980). [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

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited