dorsal/arxiv
View SchemaPoynting vector, energy density and energy velocity in anomalous dispersion medium
| Authors | Chao-Guang Huang, Yuan-Zhong Zhang |
|---|---|
| Categories | |
| ArXiv ID | physics/0104005 |
| URL | https://arxiv.org/abs/physics/0104005 |
| DOI | 10.1103/PhysRevA.65.015802 |
| Journal | Phys. Rev. A65 (2002) 015802 |
Abstract
The Poynting vector, energy density and energy velocity of light pulses propagating in anomalous dispersion medium (used in WKD-like experiments) are calculated. Results show that a negative energy density in the medium propagates along opposite of incident direction with such a velocity similar to the negative group velocity while the direction of the Poynting vector is positive. In other words, one might say that a positive energy density in the medium would propagate along the positive direction with a speed having approximately the absolute valueof the group velocity. We further point out that neither energy velocity nor group velocity is a good concept to describe the propagation process of light pulse inside the medium in WKD experiment owing to the strong accumulation and dissipation effects.
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"abstract": "The Poynting vector, energy density and energy velocity of light pulses\npropagating in anomalous dispersion medium (used in WKD-like experiments) are\ncalculated. Results show that a negative energy density in the medium\npropagates along opposite of incident direction with such a velocity similar to\nthe negative group velocity while the direction of the Poynting vector is\npositive. In other words, one might say that a positive energy density in the\nmedium would propagate along the positive direction with a speed having\napproximately the absolute valueof the group velocity. We further point out\nthat neither energy velocity nor group velocity is a good concept to describe\nthe propagation process of light pulse inside the medium in WKD experiment\nowing to the strong accumulation and dissipation effects.",
"arxiv_id": "physics/0104005",
"authors": [
"Chao-Guang Huang",
"Yuan-Zhong Zhang"
],
"categories": [
"physics.gen-ph",
"physics.optics"
],
"doi": "10.1103/PhysRevA.65.015802",
"journal_ref": "Phys. Rev. A65 (2002) 015802",
"title": "Poynting vector, energy density and energy velocity in anomalous dispersion medium",
"url": "https://arxiv.org/abs/physics/0104005"
},
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