FDTD analysis of silver-nanoparticles-embedded phase change recording pits

Jincheng Lin; Huan Huang; Yang Wang; Yiqun Wu

doi:10.1117/12.2014891

24 January 2013 FDTD analysis of silver-nanoparticles-embedded phase change recording pits

Jincheng Lin, Huan Huang, Yang Wang, Yiqun Wu

Proceedings Volume 8782, 2012 International Workshop on Information Storage and Ninth International Symposium on Optical Storage; 878207 (2013) https://doi.org/10.1117/12.2014891
Event: 2012 International Workshop on Information Data Storage and Ninth International Symposium on Optical Storage, 2012, Shanghai, China

Abstract

Super-resolution near-field structure (super-RENS) is a functional structure which can overcome the optical diffraction limit and play an important role in nano scale optical data storage. The resolution enhancement of the scatter-type super- RENS optical disk is related to the localized surface plasmon of silver particles dissociated from the AgO_x layer and its near-field interaction with the recording pits in the phase change layer. Recently, a new method for optically synthesizing silver nanoparticles in a phase change matrix has been proposed by our group [Mater. Chem. Phys. 135, 467-473(2012)], which provides a potential approach to forming a more simple plasmonic recording structure than the traditional AgO_x-type structure. In this paper, field distribution of silver-nanoparticles-embedded Ge₂Sb₂Te₅ phase change recording pits is numerically analyzed by the finite-difference time-domain (FDTD) method. The optical contrast enhancement capability is confirmed for the optimized recording structures when the pit size is smaller than the optical diffraction limit.

Citation Download Citation

Jincheng Lin, Huan Huang, Yang Wang, and Yiqun Wu "FDTD analysis of silver-nanoparticles-embedded phase change recording pits", Proc. SPIE 8782, 2012 International Workshop on Information Storage and Ninth International Symposium on Optical Storage, 878207 (24 January 2013); https://doi.org/10.1117/12.2014891

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