Two-pulse interference and superluminality

Macke, Bruno; Segard, Bernard

Document type :

Compte-rendu et recension critique d'ouvrage

DOI :

10.1016/j.optcom.2007.09.007

Title :

Two-pulse interference and superluminality

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 :

Optics Communications

Pages :

12-17

Publisher :

Elsevier

Publication date :

2008

ISSN :

0030-4018

HAL domain(s) :

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

English abstract : [en]

We examine how the interference of a coherent light-pulse with its slightly time-delayed copy may generate a pulse nearly identical to the original one and ahead of it. The simplicity of this 2-pulse system enabled us to ...
Show more >We examine how the interference of a coherent light-pulse with its slightly time-delayed copy may generate a pulse nearly identical to the original one and ahead of it. The simplicity of this 2-pulse system enabled us to obtain exact analytic expressions of the pulse distortion, valid for a wide class of pulse shapes. Explicit results are given for the pulses usually considered (gaussian, hyperbolic secant) but also for more realistic pulses of strictly limited duration. We finally show that the efficiency of the 2-pulse system is comparable to that of the other superluminal systems, at least for the pulse advancements actually demonstrated in the optical experiments.Show less >

Language :

Anglais

Popular science :

Non

Collections :