Dependence of light pulse propagation on its temporal width: Transition from group velocity to c-propagation

OPTICS COMMUNICATIONS

卷:371

Article

Ignesti, Emilio¹  Tommasi, Federico¹  Fini, Lorenzo¹  Cavalieri, Stefano¹ 

[1] Univ Florence, Dipartimento Fis & Astron, Via G Sansone 1, I-50019 Sesto Fiorentino, Italy

关键词: Slow light;    Pulse propagation;    Pulse shaping;    Dispersion;   

DOI  :  10.1016/j.optcom.2016.03.029

来源: Elsevier

【 摘 要 】

We show how the velocity of an optical pulse propagating through a dispersive medium depends on the pulse duration. A transition from the group velocity for long pulses to the in-vacuum velocity for short pulses is shown both in experimental results and in theoretical predictions. The temporal duration of the experimental pulses are 150 ps and 3.5 ns. A description of the pulse propagation in terms of the time center of mass of the energy flow allows an intuitive overview of the results. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free