Orientational optical nonlinearity of nematic liquid crystals for image conversion and optical limiting

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

Orientational optical nonlinearity of nematic liquid crystals for image conversion and optical limiting

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

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present a review of the basic mechanisms for laser induced refractive index changes associated with director axis reorientation in nematic liquid crystals. In methyl-red doped nematic liquid crystal (MRNLC), an index change coefficient of more than 10 cm²/GW has been obtained, allowing us to perform image conversion and optical limiting processes at very low optical intensities. In particular, we demonstrated a very large dynamic range twisted nematic liquid crystal limiter that will protect sensor from cw or long-pulse laser jamming.

Original language	English (US)
Pages (from-to)	52-60
Number of pages	9
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	3800
State	Published - 1999
Event	Proceedings of the 1999 Liquid Crystals III - Denver, CO, USA Duration: Jul 21 1999 → Jul 22 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Cite this

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title = "Orientational optical nonlinearity of nematic liquid crystals for image conversion and optical limiting",

abstract = "We present a review of the basic mechanisms for laser induced refractive index changes associated with director axis reorientation in nematic liquid crystals. In methyl-red doped nematic liquid crystal (MRNLC), an index change coefficient of more than 10 cm2/GW has been obtained, allowing us to perform image conversion and optical limiting processes at very low optical intensities. In particular, we demonstrated a very large dynamic range twisted nematic liquid crystal limiter that will protect sensor from cw or long-pulse laser jamming.",

author = "Khoo, {I. C.} and Shih, {M. Y.} and Wood, {M. V.} and Chen, {P. H.}",

year = "1999",

language = "English (US)",

volume = "3800",

pages = "52--60",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

issn = "0277-786X",

publisher = "SPIE",

note = "Proceedings of the 1999 Liquid Crystals III ; Conference date: 21-07-1999 Through 22-07-1999",

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TY - JOUR

T1 - Orientational optical nonlinearity of nematic liquid crystals for image conversion and optical limiting

AU - Khoo, I. C.

AU - Shih, M. Y.

AU - Wood, M. V.

AU - Chen, P. H.

PY - 1999

Y1 - 1999

N2 - We present a review of the basic mechanisms for laser induced refractive index changes associated with director axis reorientation in nematic liquid crystals. In methyl-red doped nematic liquid crystal (MRNLC), an index change coefficient of more than 10 cm2/GW has been obtained, allowing us to perform image conversion and optical limiting processes at very low optical intensities. In particular, we demonstrated a very large dynamic range twisted nematic liquid crystal limiter that will protect sensor from cw or long-pulse laser jamming.

AB - We present a review of the basic mechanisms for laser induced refractive index changes associated with director axis reorientation in nematic liquid crystals. In methyl-red doped nematic liquid crystal (MRNLC), an index change coefficient of more than 10 cm2/GW has been obtained, allowing us to perform image conversion and optical limiting processes at very low optical intensities. In particular, we demonstrated a very large dynamic range twisted nematic liquid crystal limiter that will protect sensor from cw or long-pulse laser jamming.

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UR - http://www.scopus.com/inward/citedby.url?scp=0033307852&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0033307852

SN - 0277-786X

VL - 3800

SP - 52

EP - 60

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Proceedings of the 1999 Liquid Crystals III

Y2 - 21 July 1999 through 22 July 1999

ER -

Orientational optical nonlinearity of nematic liquid crystals for image conversion and optical limiting

Abstract

All Science Journal Classification (ASJC) codes

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