Comments on Universal Features of Time Dynamics in a LeftHanded Perfect Lens by G.GomezSa.pdfVIP

Comment on: ”Universal Features of Time Dynamics in a Left-Handed Perfect Lens” by G. Gomez-Santos N. Garcia (1) and M. Nieto-Vesperinas (2) (1)E-address: nicolas.garcia@fsp.csic.es, Laboratorio de Fisica de sistemas Peque˜nos, Consejo 2 superior de Investigaciones Cientificas, Serrano 144, Madrid 28006, Spain. 0 0 (2)E-address: mnieto@icmm.csic.es, Instituto de Ciencia de Materiales de Madrid, Consejo 2 v Superior de Investigaciones Cientificas, Campus de Cantoblanco, Madrid 28049, Spain o N PACS numbers:78.20.Ci,42.30.Wb, 73.20.Mf, 78.66.Bz 7 1 v 9 3 1 1 1 2 0 / t a m - d n o c : v i X r a Typeset using REVT X E 1 Recently, we have shown [1] the impossibility of perfect lensing with left-handed material slabs, due to the divergence of the wavefield norm, and hence to the infinite energy that would accumulate the slab in order to build the stationary state. Pendry [2] has subsequently tried to remove this divergence by calling to small losses in the medium. As proven in our reply [3], this does not yield the perfect lens. Then, Haldane [4] has proposed a cut-off of the wavevector in the effective medium solution to Maxwell equations by resorting to the crystal inner structure of these so-far developed LHMs. However, he has overlooked that then, since a negative refractive index would be attained in such structure only close to resonant wavelengths, his definition of group velocity is meaningless [5], in addition, as we have shown [6] his cut-off condition would involve as many as 101000 photons in the sl