6533b86efe1ef96bd12cbde2
RESEARCH PRODUCT
Optical near-field microscopy of light focusing through a photonic crystal flat lens
Didier LippensBenoit CluzelFrédérique De FornelNathalie FabreX. MeliqueOlivier VanbésienLoïc Lalouatsubject
SuperlensMaterials sciencebusiness.industryFlat lensNear-field opticsPhysics::OpticsGeneral Physics and Astronomy01 natural scienceslaw.invention010309 opticsLens (optics)Optical axis[SPI]Engineering Sciences [physics]Opticslaw0103 physical sciencesMicroscopyOptoelectronicsNear-field scanning optical microscope010306 general physicsbusinessPhotonic crystaldescription
We report here the direct observation by using a scanning near-field microscopy technique of the light focusing through a photonic crystal flat lens designed and fabricated to operate at optical frequencies. The lens is fabricated using a III-V semiconductor slab, and we directly visualize the propagation of the electromagnetic waves by using a scanning near-field optical microscope. We directly evidence spatially, as well as spectrally, the focusing operating regime of the lens. At last, in light of the experimental scanning near-field optical microscope pictures, we discuss the lens ability to focus light at a subwavelength scale.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-01-01 |