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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 23532–23537

Silicon oxide deposition for enhanced optical switching in polydimethylsiloxane-liquid crystal hybrids

Luciano De Sio, Andreas E. Vasdekis, Julien G. Cuennet, Antonio De Luca, Alfredo Pane, and Demetri Psaltis  »View Author Affiliations

Optics Express, Vol. 19, Issue 23, pp. 23532-23537 (2011)

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We report an optical switch based on a diffraction grating by combining PDMS microstructures with a photo-responsive Nematic Liquid Crystal (NLC). The grating was realized via replica molding and was subsequently coated with a thin SiO layer. SiO induced a full planar alignment of the liquid crystal. The induced parallel alignment of the LC reduces the response time of the structure by approximately an order of magnitude compared to the same structures without SiO. We explored the effect of the pump intensity on the transmission properties and time response of the switch and identified a strong dependence on the probe polarization, due to the full planar alignment in this structure. The aforementioned inclusion of the SiO layer enables enhanced performance of optical devices based on the fusion of nematogens with soft and flexible substrates.

© 2011 OSA

OCIS Codes
(000.2700) General : General science
(050.1950) Diffraction and gratings : Diffraction gratings
(160.3710) Materials : Liquid crystals
(230.1150) Optical devices : All-optical devices
(130.4815) Integrated optics : Optical switching devices
(160.5335) Materials : Photosensitive materials

ToC Category:
Optical Devices

Original Manuscript: August 10, 2011
Revised Manuscript: October 6, 2011
Manuscript Accepted: October 10, 2011
Published: November 3, 2011

Luciano De Sio, Andreas E. Vasdekis, Julien G. Cuennet, Antonio De Luca, Alfredo Pane, and Demetri Psaltis, "Silicon oxide deposition for enhanced optical switching in polydimethylsiloxane-liquid crystal hybrids," Opt. Express 19, 23532-23537 (2011)

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