Photorefractivity and storage holographic gratings in dye- And fullerene-doped nematic liquid crystal film

I. C. Khoo; H. Li; Y. Liang; K. Wang

doi:10.1117/12.216993

Photorefractivity and storage holographic gratings in dye- And fullerene-doped nematic liquid crystal film

I. C. Khoo
, H. Li
, Y. Liang
, K. Wang

Electrical Engineering

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

2 Scopus citations

Abstract

In this paper, we will describe the basic mechanisms and dynamics of photorefractivity, and holographic grating formations in dye- and fullerene C₆₀-doped nematic liquid crystal films. The effects are attributed to photo induced molecular axis reorientation in these nematic films. A nonlinear index coefficient n₂ of 10^-2 cm²/Watt can be obtained in a 25μm thick film, with an applied dc-voltage of -1 volt. In Fullerene C₆₀-doped films, these laser induced gratings can be made permanent and electronically modulated; they can be turned off and on by an ac voltage with response times of ∼ 100 μs and a few ms, respectively.

Original language	English (US)
Pages (from-to)	2-13
Number of pages	12
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	2529
DOIs	https://doi.org/10.1117/12.216993
State	Published - Aug 18 1995
Event	Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications 1995 - San Diego, United States Duration: Jul 9 1995 → Jul 14 1995

All Science Journal Classification (ASJC) codes

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

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title = "Photorefractivity and storage holographic gratings in dye- And fullerene-doped nematic liquid crystal film",

abstract = "In this paper, we will describe the basic mechanisms and dynamics of photorefractivity, and holographic grating formations in dye- and fullerene C60-doped nematic liquid crystal films. The effects are attributed to photo induced molecular axis reorientation in these nematic films. A nonlinear index coefficient n2 of 10-2 cm2/Watt can be obtained in a 25μm thick film, with an applied dc-voltage of -1 volt. In Fullerene C60-doped films, these laser induced gratings can be made permanent and electronically modulated; they can be turned off and on by an ac voltage with response times of ∼ 100 μs and a few ms, respectively.",

author = "Khoo, \{I. C.\} and H. Li and Y. Liang and K. Wang",

note = "Publisher Copyright: {\textcopyright} 1995 SPIE. All rights reserved.; Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications 1995 ; Conference date: 09-07-1995 Through 14-07-1995",

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TY - JOUR

T1 - Photorefractivity and storage holographic gratings in dye- And fullerene-doped nematic liquid crystal film

AU - Khoo, I. C.

AU - Li, H.

AU - Liang, Y.

AU - Wang, K.

PY - 1995/8/18

Y1 - 1995/8/18

N2 - In this paper, we will describe the basic mechanisms and dynamics of photorefractivity, and holographic grating formations in dye- and fullerene C60-doped nematic liquid crystal films. The effects are attributed to photo induced molecular axis reorientation in these nematic films. A nonlinear index coefficient n2 of 10-2 cm2/Watt can be obtained in a 25μm thick film, with an applied dc-voltage of -1 volt. In Fullerene C60-doped films, these laser induced gratings can be made permanent and electronically modulated; they can be turned off and on by an ac voltage with response times of ∼ 100 μs and a few ms, respectively.

AB - In this paper, we will describe the basic mechanisms and dynamics of photorefractivity, and holographic grating formations in dye- and fullerene C60-doped nematic liquid crystal films. The effects are attributed to photo induced molecular axis reorientation in these nematic films. A nonlinear index coefficient n2 of 10-2 cm2/Watt can be obtained in a 25μm thick film, with an applied dc-voltage of -1 volt. In Fullerene C60-doped films, these laser induced gratings can be made permanent and electronically modulated; they can be turned off and on by an ac voltage with response times of ∼ 100 μs and a few ms, respectively.

UR - https://www.scopus.com/pages/publications/0003034305

UR - https://www.scopus.com/pages/publications/0003034305#tab=citedBy

U2 - 10.1117/12.216993

DO - 10.1117/12.216993

M3 - Conference article

AN - SCOPUS:0003034305

SN - 0277-786X

VL - 2529

SP - 2

EP - 13

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

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

T2 - Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications 1995

Y2 - 9 July 1995 through 14 July 1995

ER -

Photorefractivity and storage holographic gratings in dye- And fullerene-doped nematic liquid crystal film

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