TY - JOUR
T1 - Far-field optical response of localized near-field enhancements induced by nano scatters in AgOx super-resolution near-field structure
AU - Chu, Tai Chi
AU - Liu, Wei Chih
AU - Tsai, Din Ping
PY - 2005
Y1 - 2005
N2 - The super-resolution near-field structure (super-RENS) is an ultrahigh-density near-field optical disk data storage medium which can achieve superior spatial resolution. Our previous studies found that enhanced local optical intensity occurred at the near field of the super-RENS disk, and the nonlinear near-field optical enhancement is related to the localized surface plasmons of silver clusters dissociated from the AgOx layer of the super-RENS disk. In this paper, we report the near-field and far-field properties of AgOx-type super-RENS with different embedded silver nanoparticles using two-dimensional finite-difference time-domain (FDTD) calculations. Highly localized enhancements are found between adjacent silver nanoparticles in the near fields. The far-field signals of different types silver nano scatters confirm the super-resolution capability of AgO x-type Super-RENS disks. The behaviors of far-field signals indicate the correlation between the enhanced localized surface plasmons and the super-resolution capabilities of AgOx-type super-RENS.
AB - The super-resolution near-field structure (super-RENS) is an ultrahigh-density near-field optical disk data storage medium which can achieve superior spatial resolution. Our previous studies found that enhanced local optical intensity occurred at the near field of the super-RENS disk, and the nonlinear near-field optical enhancement is related to the localized surface plasmons of silver clusters dissociated from the AgOx layer of the super-RENS disk. In this paper, we report the near-field and far-field properties of AgOx-type super-RENS with different embedded silver nanoparticles using two-dimensional finite-difference time-domain (FDTD) calculations. Highly localized enhancements are found between adjacent silver nanoparticles in the near fields. The far-field signals of different types silver nano scatters confirm the super-resolution capability of AgO x-type Super-RENS disks. The behaviors of far-field signals indicate the correlation between the enhanced localized surface plasmons and the super-resolution capabilities of AgOx-type super-RENS.
KW - Finite-difference time-domain method
KW - Localized surface plasmon
KW - Metallic nanoparticles
KW - Near-field optical storage
KW - Optical disks
KW - Super-resolution near-field structure
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U2 - 10.1117/12.580165
DO - 10.1117/12.580165
M3 - Conference article
AN - SCOPUS:20044373278
SN - 0277-786X
VL - 5643
SP - 48
EP - 55
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
M1 - 12
T2 - Advances in Optical Data Storage Technology
Y2 - 8 November 2004 through 10 November 2004
ER -