dorsal/arxiv
View SchemaSurface-wave interferometry on single subwavelength slit-groove structures fabricated on gold films
| Authors | F. Kalkum, G. Gay, O. Alloschery, J. Weiner, H. J. Lezec, Y. Xie, M. Mansuripur |
|---|---|
| Categories | |
| ArXiv ID | physics/0612001 |
| URL | https://arxiv.org/abs/physics/0612001 |
| DOI | 10.1364/OE.15.002613 |
Abstract
We apply the technique of far-field interferometry to measure the properties of surface waves generated by two-dimensional (2D) single subwavelength slit-groove structures on gold films. The effective surface index of refraction measured for the surface wave propagating over a distance of more than 12 microns is determined to be 1.016 with a measurement uncertainty of 0.004, to within experimental uncertainty of the expected bound surface plasmon-polariton (SPP) value for a Au/Air interface of 1.018. We compare these measurements to finite-difference-time-domain (FDTD) numerical simulations of the optical field transmission through these devices. We find excellent agreement between the measurements and the simulations for the surface index of refraction. The measurements also show that the surface wave propagation parameter exhibits transient behavior close to the slit, evolving smoothly from greater values asymptotically toward the value expected for the SPP over the first 2-3 microns of slit-groove distance. This behavior is confirmed by the FDTD simulations.
{
"annotation_id": "3d03a408-cf3a-491a-b996-74c0eef92249",
"date_created": "2026-03-02T18:01:14.723000Z",
"date_modified": "2026-03-02T18:01:14.723000Z",
"file_hash": "43125a0eb2d1e08b3adb3842a165038ba6e9fb031fdf163d527b7ddf904fe3b4",
"private": false,
"record": {
"abstract": "We apply the technique of far-field interferometry to measure the properties\nof surface waves generated by two-dimensional (2D) single subwavelength\nslit-groove structures on gold films. The effective surface index of refraction\nmeasured for the surface wave propagating over a distance of more than 12\nmicrons is determined to be 1.016 with a measurement uncertainty of 0.004, to\nwithin experimental uncertainty of the expected bound surface plasmon-polariton\n(SPP) value for a Au/Air interface of 1.018. We compare these measurements to\nfinite-difference-time-domain (FDTD) numerical simulations of the optical field\ntransmission through these devices. We find excellent agreement between the\nmeasurements and the simulations for the surface index of refraction. The\nmeasurements also show that the surface wave propagation parameter exhibits\ntransient behavior close to the slit, evolving smoothly from greater values\nasymptotically toward the value expected for the SPP over the first 2-3 microns\nof slit-groove distance. This behavior is confirmed by the FDTD simulations.",
"arxiv_id": "physics/0612001",
"authors": [
"F. Kalkum",
"G. Gay",
"O. Alloschery",
"J. Weiner",
"H. J. Lezec",
"Y. Xie",
"M. Mansuripur"
],
"categories": [
"physics.optics"
],
"doi": "10.1364/OE.15.002613",
"title": "Surface-wave interferometry on single subwavelength slit-groove structures fabricated on gold films",
"url": "https://arxiv.org/abs/physics/0612001"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "59e87f3b-c8ea-44c4-8511-3eb90dbe3db2",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}