Field concentration by Axisymmetric local PT-symmetry
Document typeConference report
Rights accessOpen Access
We propose a new class of systems holding PT-symmetry only locally; the potential fulfills: U(r-r0)=U*(-r+r0 ) in a small neighborhood of any point r0, whereas on a global scale the system is only Parity symmetric: U(r-r0)=U(-r+r0) for all r. We show that such systems lead to a strong field localization at r=0, arising from the merge of the two different symmetries. We explore these new potentials in one- and two- dimensional complex nanophotonic structures, combining gain/loss and index modulations, which we expect to have direct applications as turning broad aperture lasers into bright and narrow output beam sources.
CitationAhmed, W., Botey, M., Herrero, R., Staliunas, K. Field concentration by Axisymmetric local PT-symmetry. A: International Conference on Metamaterials, Photonic Crystals and Plasmonics. "Meta'16 The 7th International Conference on Metamaterials, Photonic Crystals and Plasmonics". Málaga: 2016, p. 138-139.