Optically Controlled Light Propagation in Dye-Doped Nematic Liquid Crystals with Homogeneous Alignment


Article Preview

Light propagation in an optical waveguide fabricated by employing a dye-doped liquid crystal (DDLC) was observed. The propagation of a light signal in the waveguide was varied by irradiation with a control light whose wavelength was in the absorption band of the DDLC. By considering the photothermal effect of the DDLC, which enables the change of the refractive index due to temperature variation based on the absorption of light, we qualitatively explained the observed light propagation and demonstrated manipulation of the propagation.



Edited by:

Osamu Hanaizumi, Masafumi Unno and Kenta Miura




T. Sasaki et al., "Optically Controlled Light Propagation in Dye-Doped Nematic Liquid Crystals with Homogeneous Alignment", Key Engineering Materials, Vol. 497, pp. 142-146, 2012

Online since:

December 2011




[1] I.C. Khoo: Liquid Crystals: Physical Properties and Nonlinear Optical Properties (John Wiley & Sons, New York 1995).

[2] T. Scharf: Polarized Light in Liquid Crystals and Polymers (John Wiley & Sons, New Jersey 2007).

[3] M. Pecclanti, C. Conti, G. Assant, A. De Luca and C. Umeton: Nature Vol. 432 (2004), p.733.

[4] O.P. Pishnyak and O.D. Lavrentovich: Appl. Phys. Lett. Vol. 89 (2006), p.251103.

[5] A. Piccardi, A. Alberucci, U. Bortolozzo, S. Residori and G. Assant: Appl. Phys. Lett. Vol. 96 (2010), p.071104.

DOI: 10.1063/1.3301261

[6] A. d'Alessandro, R. Asquini, M. Trotta, G. Gilardi, R. Beccherelli and I.C. Khoo: Appl. Phys. Lett. Vol. 97 (2010), p.093302.

[7] H. Ono and N. Kawatsuki: Appl. Phys. Lett. Vol. 70 (1997), p.2544.

[8] H. Ono and Y. Harato: J. Opt. Soc. Am. B. Vol. 16 (1999), p.2195.

[9] T. Morisaki and H. Ono: Electr. Commun. Jpn. Part 2 Vol. 87 (2004), p.10.

[10] S. Brugioni and R. Meucci: Infrared Phys. Tech. Vol. 49 (2007), p.210.

Fetching data from Crossref.
This may take some time to load.