On the Propagation of a Short Light Pulse in a Medium with a Lorentz Contour of the Spectral Gain Line
| Autor: | N. S. Bukhman |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Normalization (statistics)
Physics Nuclear and High Energy Physics Active laser medium Physics and Astronomy (miscellaneous) Field (physics) Lorentz transformation Astronomy and Astrophysics Statistical and Nonlinear Physics Electronic Optical and Magnetic Materials Computational physics Pulse (physics) symbols.namesake Path length symbols Group velocity Electrical and Electronic Engineering Phase velocity |
| Zdroj: | Radiophysics and Quantum Electronics. 63:976-991 |
| ISSN: | 1573-9120 0033-8443 |
| DOI: | 10.1007/s11141-021-10106-7 |
| Popis: | We consider an one-dimensional problem of propagation of a short light pulse in a medium with Lorentz contour of the spectral gain line. Simple approximate formulas for the spatial distribution of the field at any time are obtained. It is shown that not only normalization of the time dependence of the field at a fixed spatial point but also normalization of the spatial distribution of the field at a fixed time occur with increasing path length. It is also shown that the velocity of motion of the spatial maximum of the field is higher than the group velocity and, in any case, as distinct from the group velocity, cannot be smaller than the halved phase velocity of light in this material. Simple expressions for the spatial and temporal growth rates of the field increase in a gain medium are obtained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|