dorsal/arxiv
View SchemaTime-Reversed Diffraction
| Authors | Max S. Zolotorev, Kirk T. McDonald |
|---|---|
| Categories | |
| ArXiv ID | physics/0003058 |
| URL | https://arxiv.org/abs/physics/0003058 |
Abstract
We show that a time-reversed formulation of Huygens-Kirchhoff diffraction can be used to deduce the transverse and longitudinal fields of a Gaussian laser beam, starting from a simple assumption of a Gaussian beam profile in the far field. An attempt to apply this technique to the far fields of a Hertzian dipole shows how the laws of diffraction do not permit a wave to be focused to a volume smaller than a cubic wavelength in a charge-free region.
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"abstract": "We show that a time-reversed formulation of Huygens-Kirchhoff diffraction can\nbe used to deduce the transverse and longitudinal fields of a Gaussian laser\nbeam, starting from a simple assumption of a Gaussian beam profile in the far\nfield. An attempt to apply this technique to the far fields of a Hertzian\ndipole shows how the laws of diffraction do not permit a wave to be focused to\na volume smaller than a cubic wavelength in a charge-free region.",
"arxiv_id": "physics/0003058",
"authors": [
"Max S. Zolotorev",
"Kirk T. McDonald"
],
"categories": [
"physics.optics"
],
"title": "Time-Reversed Diffraction",
"url": "https://arxiv.org/abs/physics/0003058"
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