Journal of the Optical Society of Korea

  • 제1권1호
  • /
  • Pages.19-22
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  • 1997
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  • 1226-4776(pISSN)
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  • 2093-6885(eISSN)
한국광학회 (Optical Society of Korea)
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Thermal fixing of multiple holographic gratings in magnesium oxide lithium niobate crystal

  • Yi, Seung-Wo (Department of Physis, Kangwon National University) ;
  • Cha, Sung-Do (Department of Physis, Kangwon National University) ;
  • Shin, Seung-Ho (Department of Physis, Kangwon National University)
  • 투고 : 1997.02.04
  • 발행 : 1997.03.01
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초록

The photorefractive properties of 4% mol magnesium oxide doped lithium niobate have been investigated at room temperature. The recording and erasing time constants were measured as a function of intensity and analyzed by using the two active species (electron-hole) model. The results were used to compute the exposure schedule for multiple hologram recording. We have recorded grating of five holograms by angular multiplexing at room temperature and fixed them by means of a thermal cycling procedure. The highest diffraction efficiency of a fixed grating is up to 50% of an unfixed one.

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참고문헌

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피인용 문헌

  1. Lifetime of thermally fixed holograms in LiNbO3 crystals doped with Mg and Fe vol.86, pp.1, 2006, https://doi.org/10.1007/s00340-006-2417-5