dorsal/arxiv
View SchemaNegative Group Velocity
| Authors | Kirk T. McDonald |
|---|---|
| Categories | |
| ArXiv ID | physics/0008013 |
| URL | https://arxiv.org/abs/physics/0008013 |
| DOI | 10.1119/1.1331304 |
Abstract
The group velocity for pulses in an optical medium can be negative at frequencies between those of a pair of laser-pumped spectral lines. The gain medium then can amplify the leading edge of a pulse resulting in a time advance of the pulse when it exits the medium, as has been recently demonstrated in the laboratory. This effect has been called superluminal, but, as a classical analysis shows, it cannot result in signal propgation at speeds greater than that of light in vacuum.
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"abstract": "The group velocity for pulses in an optical medium can be negative at\nfrequencies between those of a pair of laser-pumped spectral lines. The gain\nmedium then can amplify the leading edge of a pulse resulting in a time advance\nof the pulse when it exits the medium, as has been recently demonstrated in the\nlaboratory. This effect has been called superluminal, but, as a classical\nanalysis shows, it cannot result in signal propgation at speeds greater than\nthat of light in vacuum.",
"arxiv_id": "physics/0008013",
"authors": [
"Kirk T. McDonald"
],
"categories": [
"physics.optics"
],
"doi": "10.1119/1.1331304",
"title": "Negative Group Velocity",
"url": "https://arxiv.org/abs/physics/0008013"
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