Near-infrared sensitive photorefractive device using polymer dispersed liquid crystal and BSO: Ru hybrid structure

Ren Chung Liu, Vera Marinova*, Shiuan-Huei Lin, Ming Syuan Chen, Yi-Hsin Lin, Ken-Yuh Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

A near-infrared sensitive hybrid device, based on a Ru-doped BSO photorefractive substrate and polymer dispersed liquid crystal (PDLC) layer, is reported. It is found that the photoexcited charge carriers generated in the BSO:Ru substrate create an optically induced space charge field, sufficient to penetrate into the PDLC layer and to re-orient the LC molecules inside the droplets. Beam-coupling measurements at the Bragg regime are performed showing prospective amplification values and high spatial resolution. The proposed structure does not require indium tin oxide (ITO) contacts and alignment layers. Such a device allows all the processes to be controlled by light, thus opening further potential for real-time image processing at the near-infrared range.

Original languageEnglish
Pages (from-to)3320-3323
Number of pages4
JournalOptics Letters
Volume39
Issue number11
DOIs
StatePublished - 1 Jun 2014

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