TY - GEN
T1 - Enhanced image quality of a lossy near-field superlens using index mismatch approach
AU - Lee, Kwangchil
AU - Kim, Kyoungsik
PY - 2009
Y1 - 2009
N2 - Over the years a near-field superlens (NFSL) has received much attention because of its super-resolution beyond the diffraction limits. Till now the index matched NFSL is widely applied to the near-field imaging system under the loss-free assumption. However, the natural materials for a NFSL have intrinsic absorption loss, which prevents ideal image reconstruction and blurs the near-field image. In connection with this issue, we wish to address the compensation of blurred image in the lossy NFSL system through the analysis of optical transfer function and the full-wave numerical approach. The results to be drawn from this research are that we obtained a high-quality image of lossy NFSL through active phase correction of OTF using the index mismatch approach by tuning the wavelength of incident light. And this approach can be applied to a lossy NFSL image system in the optical, IR and THz regime.
AB - Over the years a near-field superlens (NFSL) has received much attention because of its super-resolution beyond the diffraction limits. Till now the index matched NFSL is widely applied to the near-field imaging system under the loss-free assumption. However, the natural materials for a NFSL have intrinsic absorption loss, which prevents ideal image reconstruction and blurs the near-field image. In connection with this issue, we wish to address the compensation of blurred image in the lossy NFSL system through the analysis of optical transfer function and the full-wave numerical approach. The results to be drawn from this research are that we obtained a high-quality image of lossy NFSL through active phase correction of OTF using the index mismatch approach by tuning the wavelength of incident light. And this approach can be applied to a lossy NFSL image system in the optical, IR and THz regime.
UR - http://www.scopus.com/inward/record.url?scp=72749089948&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=72749089948&partnerID=8YFLogxK
U2 - 10.1109/ICIMW.2009.5325611
DO - 10.1109/ICIMW.2009.5325611
M3 - Conference contribution
AN - SCOPUS:72749089948
SN - 9781424454174
T3 - 34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009
BT - 34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009
T2 - 34th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2009
Y2 - 21 September 2009 through 25 September 2009
ER -