future events

Three-dimensional spatiotemporal pulse-train solitons

TYPESolid State Institute Seminar
Speaker:Mr. Oren Lahav
Affiliation:Department of Physics and the Solid State Institute,Technion
Time:12:30 - 13:30
Location:Lidow Asher Peres (502)
Remark:Ph.D. Student of Associate Professor Oren Cohen
Abstract:Solitons are self-trapped wavepackets for which linear broadening is robustly balanced by
nonlinear self-focusing effects and exhibit particle-like properties. Solitons that are selftrapped in one or two dimensions have been observed in many systems, including: shallow
and deep water waves, nervous system, meteorology, Bose-Einstein condensates and
optics. Experimental demonstration of three-dimensional spatiotemporal solitons, on the
other hand, is still considered a grand challenge in nonlinear science.
In this seminar, I will present experimental observation of three-dimensional
spatiotemporal solitons. A spatially-bright temporally-dark pulse-train beam is trapped in a
homogeneous medium that supports two types of nonlinearities: slowly responding
saturable self-focusing that self-trap the beam transversely (spatially) and fast self-phase
modulation that self-localizes the dark notches longitudinally (temporally). This work
opens the possibility for experimental investigations of various solitons phenomena in