Near-sighted superlens.
نویسندگان
چکیده
We consider the problem of subwavelength imaging via a slab of a left-handed medium (LHM) in the presence of material losses. We derive the analytical expression for the resolution limit of a LHM-based lens and demonstrate that the area of its subwavelength performance is usually limited to the near-field zone.
منابع مشابه
Abstract Submitted for the MAR07 Meeting of The American Physical Society Resonant enhancement of absorption in the superlens
Submitted for the MAR07 Meeting of The American Physical Society Resonant enhancement of absorption in the superlens LEONID ALEKSEYEV, ZUBIN JACOB, EVGENII NARIMANOV, Princeton University — The Veselago lens (also known as the super lens) [1], which is a slab made of left handed material with ε=-1 and μ=-1 has interesting properties like perfect lensing [2] and cloaking [3]. When a source is pl...
متن کاملNear field enhancement in silver nanoantenna-superlens systems
We demonstrate near field enhancement generation in silver nanoantenna-superlens systems via numerical modeling. Using near-field interference and global optimization algorithms, we can design nanoantenna-superlens systems with mismatched permittivities, whose performance can match those with matched permittivities. The systems studied here may find broad applications in the fields of sensing, ...
متن کاملTheory of the transmission properties of an optical far-field superlens for imaging beyond the diffraction limit
A conventional optical superlens for imaging beyond the diffraction limit produces images only in the near-field zone of the superlens. In contrast, an optical far-field superlens (FSL) device has a remarkable transmission property that leads to a one-to-one relationship between the far-field and the near-field angular spectra. This property makes the device suitable for imaging beyond the diff...
متن کاملMagnetic Metamaterial Superlens for Increased Range Wireless Power Transfer
The ability to wirelessly power electrical devices is becoming of greater urgency as a component of energy conservation and sustainability efforts. Due to health and safety concerns, most wireless power transfer (WPT) schemes utilize very low frequency, quasi-static, magnetic fields; power transfer occurs via magneto-inductive (MI) coupling between conducting loops serving as transmitter and re...
متن کاملSuperlens based on metal-dielectric composites
Pure noble metals are typically considered to be the materials of choice for a near-field superlens that allows subwavelength resolution by recovering both propagating and evanescent waves. However, a superlens based on bulk metal can operate only at a single frequency for a given dielectric host. In this paper, it is shown that a composite metal-dielectric film, with an appropriate metal filli...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Optics letters
دوره 30 1 شماره
صفحات -
تاریخ انتشار 2005