Chin. Phys. Lett.  2004, Vol. 21 Issue (8): 1553-1555    DOI:
Original Articles |
Formation of Optical Waveguide and Annealing Behaviour of LiNbO3 Implanted by 3.0-MeV Nickel Ions
ZHANG Ting-Ting1;LU Fei1,2;LI Shi-Ling2;WANG Xue-Lin2;SHEN Ding-Yu3;MA Hong-Ji3
1School of Information Science and Engineering, Shandong University, Jinan 250100 2Department of Physics, Shandong University, Jinan 250100 3Department of Technical Physics and the Key Laboratory of Heavy Ion Physics (Ministry of Education), Peking University, Beijing 100871
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ZHANG Ting-Ting, LU Fei, LI Shi-Ling et al  2004 Chin. Phys. Lett. 21 1553-1555
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Abstract The optically polished LiNbO3 crystal was implanted with 3.0MeV nickel ions to a dose of 8×1014 ions/cm2. The implanted sample was orderly annealed at different temperatures for different times in air ambient. The waveguide properties before and after annealing were investigated. Dark modes were observed by the prism coupling technique. The reconstructed refractive index profiles were obtained with the reflectivity calculation method. With the fibre probe technique, the attenuation of the Ni-implanted barrier-confined waveguide was measured for the first time. The waveguide loss was reduced from 1.65dB/cm to 1.19dB/cm when annealing was at 300°C for 30min. With the annealing temperature increasing to 370°C , only fewer broad dark modes were found. It is indicated that the lattice damage by implantation began to resume under this annealing condition. After annealing at 380°C for 60min, all the dark modes disappeared.
Keywords: 42.79.Gn      42.82.Et      61.72.Ww     
Published: 01 August 2004
PACS:  42.79.Gn (Optical waveguides and couplers)  
  42.82.Et (Waveguides, couplers, and arrays)  
  61.72.Ww  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2004/V21/I8/01553
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ZHANG Ting-Ting
LU Fei
LI Shi-Ling
WANG Xue-Lin
SHEN Ding-Yu
MA Hong-Ji
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