Characterization of diffraction grating in photorefractive sol-gel glass

H. K. Lee, U. J. Hwang, Cha-Hwan Oh, G. J. Lee, Y. P. Lee, W. G. Jun, D. H. Choi

Research output: Contribution to journalArticle

Abstract

The photorefractivity of a sol-gel glass was investigated using two-beam-coupling (TBC), degenerate-four-wave-mixing (DFWM), and phase shifting methods. The sol-gel glass was prepared by introducing the following photorefractive elements in the polyethyleneglycol matrix: TNF, SG-Cz, and SG-MN were used as charge generator, charge transporter, and electrooptic material, respectively. TBC gain of 90 cm-1 and diffraction efficiency of 46% were obtained at 107 V/μm field. Also we measured the grating build-up and relaxation characteristics. The holographic phase shift was measured to be 51° at 107 V/μm field. In order to compare this photorefractive sol-gel glass with inorganic photorefractive crystal, we measured the photorefractive properties of Fe:LiNbO3. As a result, we obtained the TBC gain of 50 cm-1, the diffraction efficiency of 47%, and the phase shift of 90° for Fe:LiNbO3 sample.

Original languageEnglish
Pages (from-to)129-135
Number of pages7
JournalMolecular Crystals and Liquid Crystals
Volume425
DOIs
StatePublished - 2004 Dec 1

Fingerprint

Diffraction gratings
gratings (spectra)
Sol-gels
Diffraction efficiency
gels
Phase shift
Glass
glass
phase shift
photorefractivity
Photorefractive crystals
transporter
Four wave mixing
Electrooptical effects
diffraction
four-wave mixing
electro-optics
generators
gratings
matrices

Keywords

  • Degenerate four wave mixing
  • Holographic phase shift
  • Photorefractivity
  • Sol-gel glass
  • Two beam coupling

Cite this

Lee, H. K. ; Hwang, U. J. ; Oh, Cha-Hwan ; Lee, G. J. ; Lee, Y. P. ; Jun, W. G. ; Choi, D. H. / Characterization of diffraction grating in photorefractive sol-gel glass. In: Molecular Crystals and Liquid Crystals. 2004 ; Vol. 425. pp. 129-135.
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abstract = "The photorefractivity of a sol-gel glass was investigated using two-beam-coupling (TBC), degenerate-four-wave-mixing (DFWM), and phase shifting methods. The sol-gel glass was prepared by introducing the following photorefractive elements in the polyethyleneglycol matrix: TNF, SG-Cz, and SG-MN were used as charge generator, charge transporter, and electrooptic material, respectively. TBC gain of 90 cm-1 and diffraction efficiency of 46{\%} were obtained at 107 V/μm field. Also we measured the grating build-up and relaxation characteristics. The holographic phase shift was measured to be 51° at 107 V/μm field. In order to compare this photorefractive sol-gel glass with inorganic photorefractive crystal, we measured the photorefractive properties of Fe:LiNbO3. As a result, we obtained the TBC gain of 50 cm-1, the diffraction efficiency of 47{\%}, and the phase shift of 90° for Fe:LiNbO3 sample.",
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Characterization of diffraction grating in photorefractive sol-gel glass. / Lee, H. K.; Hwang, U. J.; Oh, Cha-Hwan; Lee, G. J.; Lee, Y. P.; Jun, W. G.; Choi, D. H.

In: Molecular Crystals and Liquid Crystals, Vol. 425, 01.12.2004, p. 129-135.

Research output: Contribution to journalArticle

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T1 - Characterization of diffraction grating in photorefractive sol-gel glass

AU - Lee, H. K.

AU - Hwang, U. J.

AU - Oh, Cha-Hwan

AU - Lee, G. J.

AU - Lee, Y. P.

AU - Jun, W. G.

AU - Choi, D. H.

PY - 2004/12/1

Y1 - 2004/12/1

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AB - The photorefractivity of a sol-gel glass was investigated using two-beam-coupling (TBC), degenerate-four-wave-mixing (DFWM), and phase shifting methods. The sol-gel glass was prepared by introducing the following photorefractive elements in the polyethyleneglycol matrix: TNF, SG-Cz, and SG-MN were used as charge generator, charge transporter, and electrooptic material, respectively. TBC gain of 90 cm-1 and diffraction efficiency of 46% were obtained at 107 V/μm field. Also we measured the grating build-up and relaxation characteristics. The holographic phase shift was measured to be 51° at 107 V/μm field. In order to compare this photorefractive sol-gel glass with inorganic photorefractive crystal, we measured the photorefractive properties of Fe:LiNbO3. As a result, we obtained the TBC gain of 50 cm-1, the diffraction efficiency of 47%, and the phase shift of 90° for Fe:LiNbO3 sample.

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