From Sommerfeld and Brillouin forerunners to optical precursors

Macke, Bruno; Segard, Bernard

Document type :

Article dans une revue scientifique

DOI :

10.1103/PhysRevA.87.043830

Title :

From Sommerfeld and Brillouin forerunners to optical precursors

Author(s) :

Macke, Bruno [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]
Segard, Bernard [Auteur]
Laboratoire de Physique des Lasers, Atomes et Molécules - UMR 8523 [PhLAM]

Journal title :

Physical Review A : Atomic, molecular, and optical physics

Pages :

043830

Publisher :

American Physical Society

Publication date :

2013-04-22

ISSN :

1050-2947

English keyword(s) :

Wave Propagation
Sommerfeld and Brillouin forerunners
Optical Precursors

HAL domain(s) :

Physique [physics]/Physique [physics]/Optique [physics.optics]

English abstract : [en]

The Sommerfeld and Brillouin forerunners generated in a single-resonance absorbing medium by an incident step-modulated pulse are theoretically considered in the double limit where the susceptibility of the medium is weak ...
Show more >The Sommerfeld and Brillouin forerunners generated in a single-resonance absorbing medium by an incident step-modulated pulse are theoretically considered in the double limit where the susceptibility of the medium is weak and the resonance is narrow. Combining direct Laplace-Fourier integration and calculations by the saddle-point method, we establish an explicit analytical expression of the transmitted field valid at any time, even when the two forerunners significantly overlap. We examine how their complete overlapping, occurring for shorter propagation distances, originates the formation of the unique transient currently named resonant precursor or dynamical beat. We obtain an expression of this transient identical to that usually derived within the slowly varying envelope in spite of the initial discontinuity of the incident field envelope. The dynamical beats and 0Pi pulses generated by ultra-short incident pulses are also briefly examinedShow less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

Laboratoire de Physique des Lasers, Atomes et Molécules (PhLAM) - UMR 8523

Source :

Harvested from HAL

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http://arxiv.org/pdf/1302.2586
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https://hal.archives-ouvertes.fr/hal-00787319v2/document
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