@article {Kirby2011,
	title = {Evanescent gain for slow and stopped light in negative refractive index heterostructures},
	journal = {Physical Review B - Condensed Matter and Materials Physics},
	volume = {84},
	number = {4},
	year = {2011},
	note = {cited By 19},
	abstract = {We theoretically and numerically analyze a five-layer "trapped rainbow" waveguide made of a passive negative refractive index (NRI) core layer and gain strips in the cladding. Analytic transfer-matrix calculations and full-wave time-domain simulations are deployed to calculate, both in the frequency and in the time domain, the losses or gain experienced by complex-wave-vector and complex-frequency modes. We find excellent agreement between five distinct sets of results, showing that the use of evanescent pumping (gain) can compensate the losses in the NRI slow- and stopped-light regimes. {\textcopyright} 2011 American Physical Society.},
	doi = {10.1103/PhysRevB.84.041103},
	url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-79961233322\&doi=10.1103\%2fPhysRevB.84.041103\&partnerID=40\&md5=c68ab7a6f998404a7acc6a05d5432afd},
	author = {Kirby, E.I. and Hamm, J.M. and Pickering, T.W. and K. L. Tsakmakidis and Hess, O.}
}
