Extremely nonlinear photosensitive liquid crystals for image sensing and sensor protection

I. C. Khoo; M. V. Wood; M. Y. Shih; P. H. Chen

doi:10.1364/OE.4.000432

Extremely nonlinear photosensitive liquid crystals for image sensing and sensor protection

I. C. Khoo, M. V. Wood, M. Y. Shih, P. H. Chen

Research output: Contribution to journal › Article › peer-review

75 Scopus citations

Abstract

Optically induced nematic liquid crystal axis reorientation results in extraordinarily large nonlinear refractive index changes that could find practical applications in conjunction with cw or long-pulse lasers. We discuss the origins of these nonlinearities, and present the results of recent experimental studies of image conversion, optical limiting and sensor protection using aligned dye-doped nematic liquid crystal films in all-optical configurations. These processes are characterized by unprecedented low threshold laser powers, thus presenting nonlinear photosensitive nematic liquid crystals as promising next generation image processing and optical switching/limiting material.

Original language	English (US)
Pages (from-to)	432-442
Number of pages	11
Journal	Optics Express
Volume	4
Issue number	11
DOIs	https://doi.org/10.1364/OE.4.000432
State	Published - May 1999

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1364/OE.4.000432

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Extremely nonlinear photosensitive liquid crystals for image sensing and sensor protection

Abstract

All Science Journal Classification (ASJC) codes

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