Enhanced superlens imaging with loss-compensating hyperbolic near-field spatial filter

Anindya Ghoshroy, Wyatt Adams, Xu Zhang, Durdu Güney

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Recently a coherent optical process called plasmon-injection (Π) scheme, which employs an auxiliary source, has been introduced as a new technique to compensate losses in metamaterials. Here, a physical implementation of the Π scheme is proposed for enhanced superlens imaging in the presence of absorption losses and noise. The auxiliary source is constructed by a high-intensity illumination (above 1 mW∕μm2) of the superlens integrated with a near-field spatial filter. The integrated system enables reconstruction of an object previously unresolvable with the superlens alone. This work elevates the viability of the Π scheme as a strong candidate for loss compensation in near-field imaging systems without requiring nonlinear effects or gain media.

Original languageEnglish
Pages (from-to)1810-1813
Number of pages4
JournalOptics Letters
Issue number8
StatePublished - Apr 15 2018


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