Delay times and detector times for optical pulses traversing plasmas and negative refractive media

Details Delay times and detector times for optical pulses traversing plasmas and negative refractive media Delay times and detector times for optical pulses traversing plasmas and negative refractive media

2006-04-29

arxiv.org/abs/cond-mat/0605013v3

Phys. Rev. E 74, 036601 (2006)

Physics

Condensed Matter

Materials Science

Scientific paper

10.1103/PhysRevE.74.036601

We show that arrival times for electromagnetic pulses measured through the rate of absorption in an ideal impedance matched detector are equivalent to the arrival times using the average flow of optical energy as proposed by Peatross {\it et al.} [ Phys. Rev. Lett. {\bf 84}, 2370 (2000)]. We then investigate the transport of optical pulses through dispersive media with negative dielectric permittivity and negative refractive index choosing the geometry such that no resonant effects come into play. For evanescent waves, the definitions of the group delay and the reshaping delay get interchanged in comparison to propagating waves. The total delay times for the evanescent waves can be negative in an infinite plasma medium even for broad-band pulses. The total time is, however, positive for broad band pulses in the presence of an interface when the radiation is detected outside the plasma. We find evidence of the Hartman effect for pulses when the distance traversed in the plasma is much smaller than the free space pulse length. We also show that for a negative refractive index medium(NRM) with $\epsilon(\omega)$ = $\mu(\omega)$ the reshaping delay for propagating waves is identically zero. The total delay time in NRM is otherwise dominated by the reshaping delay time, and for broad band pulses in NRM the total delay time is subluminal.

Affiliated with

Also associated with

No associations

Rating

Delay times and detector times for optical pulses traversing plasmas and negative refractive media does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Delay times and detector times for optical pulses traversing plasmas and negative refractive media, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Delay times and detector times for optical pulses traversing plasmas and negative refractive media will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-298893