Investigation of Bragg Gratings Recorded in Polymer- Dispersed Liquid Crystals
نویسندگان
چکیده
Bragg gratings, holographically formed in polymer-dispersed liquid crystals (H-PDLCs) are studied. Mixture of the commercially available E7 liquid crystal and NOA65 polymer in ration 1:1 are employed. Polymerisation in presence of electric field is produced. A significant increase of the diffraction efficiency in the case of field-applied recording is observed. The exposure characteristics, electric field switching behaviour, polarization and Bragg angle dependences are examined.
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تاریخ انتشار 2004