dorsal/arxiv
View SchemaConstruction of a polarization insensitive lens from a quasi-isotropic metamaterial slab
| Authors | Hailu Luo, Zhongzhou Ren, Weixing Shu, Fei Li |
|---|---|
| Categories | |
| ArXiv ID | physics/0607068 |
| URL | https://arxiv.org/abs/physics/0607068 |
| DOI | 10.1103/PhysRevE.75.026601 |
| Journal | Physical Review E 75, 026601 (2007). |
Abstract
We propose to employ the quasiisotropic metamaterial (QIMM) slab to construct a polarization insensitive lens, in which both E- and H-polarized waves exhibit the same refocusing effect. For shallow incident angles, the QIMM slab will provide some degree of refocusing in the same manner as an isotropic negative index material. The refocusing effect allows us to introduce the ideas of paraxial beam focusing and phase compensation by the QIMM slab. On the basis of angular spectrum representation, a formalism describing paraxial beams propagating through a QIMM slab is presented. Because of the negative phase velocity in the QIMM slab, the inverse Gouy phase shift and the negative Rayleigh length of paraxial Gaussian beam are proposed. We find that the phase difference caused by the Gouy phase shift in vacuum can be compensated by that caused by the inverse Gouy phase shift in the QIMM slab. If certain matching conditions are satisfied, the intensity and phase distributions at object plane can be completely reconstructed at image plane. Our simulation results show that the superlensing effect with subwavelength image resolution could be achieved in the form of a QIMM slab.
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"abstract": "We propose to employ the quasiisotropic metamaterial (QIMM) slab to construct\na polarization insensitive lens, in which both E- and H-polarized waves exhibit\nthe same refocusing effect. For shallow incident angles, the QIMM slab will\nprovide some degree of refocusing in the same manner as an isotropic negative\nindex material. The refocusing effect allows us to introduce the ideas of\nparaxial beam focusing and phase compensation by the QIMM slab. On the basis of\nangular spectrum representation, a formalism describing paraxial beams\npropagating through a QIMM slab is presented. Because of the negative phase\nvelocity in the QIMM slab, the inverse Gouy phase shift and the negative\nRayleigh length of paraxial Gaussian beam are proposed. We find that the phase\ndifference caused by the Gouy phase shift in vacuum can be compensated by that\ncaused by the inverse Gouy phase shift in the QIMM slab. If certain matching\nconditions are satisfied, the intensity and phase distributions at object plane\ncan be completely reconstructed at image plane. Our simulation results show\nthat the superlensing effect with subwavelength image resolution could be\nachieved in the form of a QIMM slab.",
"arxiv_id": "physics/0607068",
"authors": [
"Hailu Luo",
"Zhongzhou Ren",
"Weixing Shu",
"Fei Li"
],
"categories": [
"physics.optics"
],
"doi": "10.1103/PhysRevE.75.026601",
"journal_ref": "Physical Review E 75, 026601 (2007).",
"title": "Construction of a polarization insensitive lens from a quasi-isotropic metamaterial slab",
"url": "https://arxiv.org/abs/physics/0607068"
},
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