Dynamic Nonlinear X Waves for Femtosecond Pulse Propagation in Water

Dynamic nonlinear X waves for femtosecond pulse propagation in water.

Recent experiments involving femtosecond pulses in water displayed long-distance propagation analogous to that reported in air. We verify this phenomenon numerically and show that the propagation is dynamic as opposed to self-guided. Furthermore, we demonstrate that the propagation can be interpreted as being due to dynamic nonlinear X waves whose robustness and role in long-distance propagatio...

Femtosecond surface plasmon pulse propagation.

We analyze ultrafast surface plasmon-polariton pulse reshaping effects and nonlinear propagation modes for metal/dielectric plasmon waveguides. It is found that group velocity and loss dispersion effects can substantially modify both pulse duration (broadening/narrowing) and intensity decay (acceleration/retardation) by as much as several tens of percentage points in the short-pulse regime and ...

On Nonlinear Water Waves in a Channel

The study of propagation of a femtosecond laser pulse in the breast tissue

In this paper, the evaluation of time profile of a femtosecond pulse laser propagated through biological tissues is studied. The majority of the biological tissues with a high scattering anisotropy must be considered as turbid media, that their optical responses are complicated. To study the propagation of ultra-short pulse in turbid media, the diffuse equation is used. In this study, the analy...

Holographic capture of femtosecond pulse propagation

We have implemented a holographic system to study the propagation of femtosecond laser pulses with high temporal 150 fs and spatial resolutions 4 m . The phase information in the holograms allows us to reconstruct both positive and negative index changes due to the Kerr nonlinearity positive and plasma formation negative , and to reconstruct three-dimensional structure. Dramatic differences wer...