TY - GEN
T1 - A study of the image quality in a lossy NFSL
AU - Lee, Kwangchil
AU - Kim, Kyoungsik
PY - 2009
Y1 - 2009
N2 - Recently, the near-field superlens (NFSL) based on the negative permittivity (ε < 0) has been much attraction issue because of its useful application in a near-field imaging system beyond the diffraction limits. Silver in the UV region and silicon carbide in the mid-IR regime has been reported as suitable materials for the NFSL. However, these materials have the intrinsic absorption loss, which blurs the near-field image. In this research, we theoretically predict enhancement of image quality in a lossy NFSL system using the full-wave numerical approach and electrostatic approximation method. As a result, we recognized that an unmatched NFSL has better image quality compared to the traditional match NFSL.
AB - Recently, the near-field superlens (NFSL) based on the negative permittivity (ε < 0) has been much attraction issue because of its useful application in a near-field imaging system beyond the diffraction limits. Silver in the UV region and silicon carbide in the mid-IR regime has been reported as suitable materials for the NFSL. However, these materials have the intrinsic absorption loss, which blurs the near-field image. In this research, we theoretically predict enhancement of image quality in a lossy NFSL system using the full-wave numerical approach and electrostatic approximation method. As a result, we recognized that an unmatched NFSL has better image quality compared to the traditional match NFSL.
UR - http://www.scopus.com/inward/record.url?scp=70350397007&partnerID=8YFLogxK
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U2 - 10.1117/12.826796
DO - 10.1117/12.826796
M3 - Conference contribution
AN - SCOPUS:70350397007
SN - 9780819476821
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Metamaterials
T2 - Metamaterials: Fundamentals and Applications II
Y2 - 2 August 2009 through 5 August 2009
ER -