Journal of the Optical Society of Korea

  • 제8권1호
  • /
  • Pages.6-12
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  • 2004
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  • 1226-4776(pISSN)
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  • 2093-6885(eISSN)
한국광학회 (Optical Society of Korea)
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Bragg Gratings Generated by Coupling of Surface Plasmons Induced on Metal N anoparticles

  • Song, Seok-Ho (Microoptics National Research Laboratory (NRL), Department of Physics, Hanyang University) ;
  • Won, Hyong-Sik (Microoptics National Research Laboratory (NRL), Department of Physics, Hanyang University) ;
  • Choi, Ki-Young (Microoptics National Research Laboratory (NRL), Department of Physics, Hanyang University) ;
  • Oh, Cha-Hwan (Microoptics National Research Laboratory (NRL), Department of Physics, Hanyang University) ;
  • Kim, Pill-Soo (Microoptics National Research Laboratory (NRL), Department of Physics, Hanyang University) ;
  • Shin, Dong-Wook (Department of Ceramic Engineering, Hanyang University)
  • 투고 : 2004.02.24
  • 발행 : 2004.03.01
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초록

Diffraction Bragg gratings consisting of metal (silver) nanoparticles are generated inside a soda-lime glass substrate. After ion-exchanging and annealing processes in the glass, the silver nanoparticles are first formed with the particle diameters of 10 nm ∼ 30 nm. By interfering two CW laser beams at ∼ 60 ${\mu}{\textrm}{m}$ deep under the surface of the nanoparticles-dispersed glass, Bragg gratings with thickness of 15 ${\mu}{\textrm}{m}$ and period of 3.5 ${\mu}{\textrm}{m}$ are generated. Diffraction efficiency of the gratings formed by two TE-polarized beams is three times higher than that by two TM-polarized beams. From this polarization dependence, we have found that strong coupling of the surface plasmons induced on the metal particles may contribute dominantly to generate the diffraction grating.

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