A novel control of the grating efficiency in a nematic liquid crystal cell with an azobenzene polymer surface is proposed. In an optical control regime, the grating effect can be controlled by alternate polarization switchings of one pump beam due to strong polarization sensitivity of azobenzene chromophores. Moreover, the grating efficiency can be easily tuned by an external ac electric field.
|Number of pages||4|
|Journal||Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals|
|Publication status||Published - 2001|
Bibliographical noteFunding Information:
Acknowledgment This work was supported in part by KOSEF through RCFRM at Korea University.
- Azobenzene polymer
- Liquid crystal grating
- Polarization grating
ASJC Scopus subject areas
- Condensed Matter Physics