Skip to Main content Skip to Navigation
Journal articles

Gain-assisted transformation optics

Abstract : Loss severely degrades the cloaking effect of the device designed by traditional transformation. In this letter, we propose gain-assisted transformation optics to overcome the loss problem by introducing gain media into a spherical cloak. The gain media, which can amplify the electromagnetic fields, is controlled precisely to compensate the inherent loss in experimental realization of cloaks. We discuss the significance of controlling embedded gain materials in the context of the inverse design mechanism, which allows us to wisely select realizable materials with constant gain and loss along the radius. For practical realizations, isotropic spherical gain-assisted cloak is designed. Full-wave simulations validate the proposed design concept, which can be utilized to alleviate the inevitable loss problem in transformational optical devices.
Document type :
Journal articles
Complete list of metadata
Contributor : Olivier Schneegans Connect in order to contact the contributor
Submitted on : Monday, June 25, 2012 - 12:09:20 PM
Last modification on : Thursday, June 17, 2021 - 3:50:33 AM

Links full text



T.C. Han, Cheng-Wei Qiu, X.H. Tang, Saïd Zouhdi. Gain-assisted transformation optics. Optics Express, Optical Society of America - OSA Publishing, 2011, 19 (9), pp.8610-8615. ⟨10.1364/OE.19.008610⟩. ⟨hal-00711564⟩



Les métriques sont temporairement indisponibles