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This article is cited in 9 scientific papers (total in 9 papers)
Interaction of laser radiation with matter. Laser plasma
Deformation of the signal envelope due to a strong dispersion of the refractive index in the gain region
N. S. Bukhman Samara State Architecture and Building Academy
Abstract:
It is shown that, when a narrow-band signal with a non-Gaussian envelope propagates in a medium with a strong dispersion, the signal envelope being distorted due to the dispersion of the gain (or) absorption in the medium. Nevertheless, the amplitude-modulated signal having a symmetric (even) intensity envelope remains the same. The propagation velocity of the `middle point' (i.e., the symmetry centre) of the signal coincides with the real group velocity of the wave with a given carrier frequency in the medium and can be subluminal, superluminal or negative. Therefore, the concept of a real group velocity (including the superluminal or negative velocity) is also applicable in media with a strong dispersion of the gain (or absorption).
Received: 19.03.2003 Revised: 26.08.2003
Citation:
N. S. Bukhman, “Deformation of the signal envelope due to a strong dispersion of the refractive index in the gain region”, Kvantovaya Elektronika, 34:2 (2004), 120–124 [Quantum Electron., 34:2 (2004), 120–124]
Linking options:
https://www.mathnet.ru/eng/qe2595 https://www.mathnet.ru/eng/qe/v34/i2/p120
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Abstract page: | 206 | Full-text PDF : | 163 | First page: | 1 |
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