Converging and wave guiding of Gaussian beam by two-layer dielectric rods
| Title | Converging and wave guiding of Gaussian beam by two-layer dielectric rods |
| Publication Type | Journal Article |
| Year of Publication | 2008 |
| Authors | Dai W, Soukoulis CM |
| Journal Title | Applied Physics Letters |
| Volume | 93 |
| Pages | 201101 |
| Date Published | 11/01 |
| Type of Article | Article |
| ISBN Number | 0003-6951 |
| Accession Number | ISI:000261141400001 |
| Keywords | laser beams, light, optical waveguide theory, PHOTONIC CRYSTAL, SUBWAVELENGTH APERTURE, surface, surface states |
| Abstract | We have shown that a two-layer dielectric structure can give excellent beaming and enhanced transmission simultaneously of a Gaussian source. The front surface of the layer of dielectric rods supports surface states and the rear grading layer couples the surface states to radiation modes. By repeating periodically this two-layer structure, one can obtain excellent beaming and enhanced transmission for very long distances. |
| DOI | 10.1063/1.3025818 |
| Alternate Journal | Appl. Phys. Lett. |
