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Proceedings Article

Relation of electro-optical characteristics to materials properties and morphology in polymer-dispersed liquid crystal holographic gratings

[+] Author Affiliations
Richard L. Sutherland, Lalgudi V. Natarajan, Vincent P. Tondiglia, Timothy J. Bunning, Bob L. Epling, Donna M. Brandelik

Science Applications International Corp. (USA)

Proc. SPIE 3010, Diffractive and Holographic Device Technologies and Applications IV, 142 (May 15, 1997); doi:10.1117/12.274412
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From Conference Volume 3010

  • Diffractive and Holographic Device Technologies and Applications IV
  • Ivan Cindrich; Sing H. Lee
  • San Jose, CA | February 08, 1997

abstract

Switchable holograms in polymer-dispersed liquid crystals are now being considered for a variety of applications in which transmission loss, cross-talk, and on/off dynamic range are important issues, particularly as devices are stacked in tandem. Switching voltage and speed also remain as important considerations. All of these characteristics are related to the properties of materials comprising the switchable grating as well as the microscopic morphology. In this paper we explore these material-structure-property relations and examine trade-offs in device parameters. It appears that low optical scattering and wide dynamic range approximately 40 dB are achievable while retaining microsecond switching times. Further reductions in switching voltage will require research in the interfacial anchoring and order parameter of the liquid crystal droplets.

© (1997) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Richard L. Sutherland ; Lalgudi V. Natarajan ; Vincent P. Tondiglia ; Timothy J. Bunning ; Bob L. Epling, et al.
"Relation of electro-optical characteristics to materials properties and morphology in polymer-dispersed liquid crystal holographic gratings", Proc. SPIE 3010, Diffractive and Holographic Device Technologies and Applications IV, 142 (May 15, 1997); doi:10.1117/12.274412; http://dx.doi.org/10.1117/12.274412


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