OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 19 — Jul. 1, 2009
  • pp: 3737–3741

Fast switching characteristics of a microlens array using the electroclinic effect of Sm A * liquid crystals

Yong-Min Lee, Jin Seog Gwag, Yoonseuk Choi, Kwang-Ho Lee, Chang-Jae Yu, and Jae-Hoon Kim  »View Author Affiliations


Applied Optics, Vol. 48, Issue 19, pp. 3737-3741 (2009)
http://dx.doi.org/10.1364/AO.48.003737


View Full Text Article

Enhanced HTML    Acrobat PDF (517 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

We present a microlens array characterized by the electroclinic effect of chiral smectic A ( Sm A * ) liquid crystals, which show the very fast dynamic switching characteristics required in high-speed optical devices. In order to easily control the intensity at the focal length of the proposed dynamic microlens structure, we adopt a solid-type liquid crystal polymer with optical anisotropy, which can split the beam intensity into two directions, depending on the vectorial portion of the polarization state of the light. The proposed microlens shows a focal intensity tunable by controlling the polarization of light at the Sm A * liquid crystal. The lens has a very fast switching time of about 24 μs , which is several times faster than conventional microlens arrays with surface-stabilized ferroelectric liquid crystals.

© 2009 Optical Society of America

OCIS Codes
(160.3710) Materials : Liquid crystals
(220.3630) Optical design and fabrication : Lenses
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:
Optical Devices

History
Original Manuscript: April 1, 2009
Revised Manuscript: May 28, 2009
Manuscript Accepted: June 8, 2009
Published: June 23, 2009

Citation
Yong-Min Lee, Jin Seog Gwag, Yoonseuk Choi, Kwang-Ho Lee, Chang-Jae Yu, and Jae-Hoon Kim, "Fast switching characteristics of a microlens array using the electroclinic effect of SmA* liquid crystals," Appl. Opt. 48, 3737-3741 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-19-3737


Sort:  Author  |  Year  |  Journal  |  Reset  

References

  1. K. Rastani, C. Lin, and J. S. Patel, “Active-fiber star coupler that uses arrays of microlenses and liquid-crystal modulators,” Appl. Opt. 31, 3046-3050 (1992). [CrossRef] [PubMed]
  2. B. Löfving and S. Hård, “Beam steering with two ferroelectric liquid-crystal spatial light modulators,” Opt. Lett. 23, 1541-1543 (1998). [CrossRef]
  3. B. Lee, S. Jung, and J.-H. Park, “Viewing-angle-enhanced integral imaging by lens switching,” Opt. Lett. 27, 818-820 (2002). [CrossRef]
  4. M. Ye, Y. Yokoyama, and S. Sato, “Liquid crystal lens with voltage and azimuth-dependent focus,” Proc. SPIE 5639, 124-128 (2004). [CrossRef]
  5. A. F. Naumov, G. Love, M. Yu. Loktev, and F. L. Vladimirov, “Control optimization of spherical modal liquid crystal lenses,” Opt. Express 4, 344-352 (1999). [CrossRef] [PubMed]
  6. H. Ren, Y. H. Fan, S. Gauza, and S. T. Wu, “Tunable-focus flat liquid crystal spherical lens,” Appl. Phys. Lett. 84, 4789-4791 (2004). [CrossRef]
  7. H.-S. Ji, S. Kumar, and J.-H. Kim, “Electrically controllable microlens array fabricated by anisotropic phase separation from liquid-crystal and polymer composite materials,” Opt. Lett. 28, 1147-1149 (2003). [CrossRef] [PubMed]
  8. H. Ren, Y.-H. Fan, and S. T. Wu, “Tunable Fresnel lens using nanoscale polymer-dispersed liquid crystals,” Appl. Phys. Lett. 83, 1515-1517 (2003). [CrossRef]
  9. H. Ren, Y.-H. Fan, Y.-H. Lin, and S. T. Wu, “Tunable-focus microlens array using nanosized polymer-dispersed liquid crystal droplets,” Opt. Commun. 247, 101-106 (2005). [CrossRef]
  10. J.-H. Kim and S. Kumar, “Fast switchable and bistable microlens array using ferroelectric liquid crystals,” Jpn. J. Appl. Phys. Part 1 43, 7050-7053 (2004). [CrossRef]
  11. Y. Choi, C.-J. Yu, J.-H. Kim, and S.-D. Lee, “Fast switching characteristics of surface-relief microlens array based on a ferroelectric liquid crystal,” Ferroelectrics 312, 25-30(2004). [CrossRef]
  12. N. A. Clark and S. T. Lagerwall, “Submicrosecond bistable electro-optic switching in liquid crystals,” Appl. Phys. Lett. 36, 899-901 (1980). [CrossRef]
  13. S. Garoff and R. B. Meyer, “Electroclinic effect at the A-C phase change in a chiral smectic liquid crystal,” Phys. Rev. Lett. 38, 848-851 (1977). [CrossRef]
  14. G. Andersson, I. Dahl, L. Komitov, S. T. Lagerwall, K. Skarp, and B. Stebler, “Device physics of the soft-mode electro-optic effect,” J. Appl. Phys. 66, 4983-4985 (1989). [CrossRef]
  15. G. Andersson, I. Dahl, P. Keller, W. Kuczynsky, S. T. Lagerwall, K. Skarp, and B. Stebler, “Submicrosecond electro-optic switching in the liquid-crystal smectic A phase: the soft-mode ferroelectric effect,” Appl. Phys. Lett. 51, 640-642 (1987). [CrossRef]
  16. Y. P. Kalmykov, J. K. Vij, Huan Xu, A. Rappaport, and M. D. Wand, “Dielectric study of the electroclinic effect in the smectic-A phase,” Phys Rev. E. 50, 2109-2114 (1994). [CrossRef]
  17. S. D. Lee and J. S. Patel, “Temperature and field dependence of the switching behavior of induced molecular tilt near the smectic A−C* transition,” Appl. Phys. Lett. 55, 122-124 (1989). [CrossRef]
  18. S. D. Lee and J. S. Patel, “Nonlinear behavior of the field-induced molecular tilt near the smectic A−C* transition,” Appl. Phys. Lett. 54, 1653-1655 (1989). [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.

Figures

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

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited