Details
| Original language | English |
|---|---|
| Article number | 243903 |
| Journal | Physical review letters |
| Volume | 111 |
| Issue number | 24 |
| Publication status | Published - 10 Dec 2013 |
Abstract
The transient appearance of bright spots in the beam profile of optical filaments formed in xenon is experimentally investigated. Fluence profiles are recorded with high-speed optical cameras at the kilohertz repetition rate of the laser source. A statistical analysis reveals a thresholdlike appearance of heavy-tailed fluence distributions together with the transition from single to multiple filamentation. The multifilament scenario exhibits near-exponential probability density functions, with extreme events exceeding the significant wave height by more than a factor of 10. The extreme events are isolated in space and in time. The macroscopic origin of these experimentally observed heavy-tail statistics is shown to be local refractive index variations inside the nonlinear medium, induced by multiphoton absorption and subsequent plasma thermalization. Microscopically, mergers between filament strings appear to play a decisive role in the observed rogue wave statistics.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Physical review letters, Vol. 111, No. 24, 243903, 10.12.2013.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Spatiotemporal rogue events in optical multiple filamentation
AU - Birkholz, Simon
AU - Nibbering, Erik T.J.
AU - Brée, Carsten
AU - Skupin, Stefan
AU - Demircan, Ayhan
AU - Genty, Goëry
AU - Steinmeyer, Günter
PY - 2013/12/10
Y1 - 2013/12/10
N2 - The transient appearance of bright spots in the beam profile of optical filaments formed in xenon is experimentally investigated. Fluence profiles are recorded with high-speed optical cameras at the kilohertz repetition rate of the laser source. A statistical analysis reveals a thresholdlike appearance of heavy-tailed fluence distributions together with the transition from single to multiple filamentation. The multifilament scenario exhibits near-exponential probability density functions, with extreme events exceeding the significant wave height by more than a factor of 10. The extreme events are isolated in space and in time. The macroscopic origin of these experimentally observed heavy-tail statistics is shown to be local refractive index variations inside the nonlinear medium, induced by multiphoton absorption and subsequent plasma thermalization. Microscopically, mergers between filament strings appear to play a decisive role in the observed rogue wave statistics.
AB - The transient appearance of bright spots in the beam profile of optical filaments formed in xenon is experimentally investigated. Fluence profiles are recorded with high-speed optical cameras at the kilohertz repetition rate of the laser source. A statistical analysis reveals a thresholdlike appearance of heavy-tailed fluence distributions together with the transition from single to multiple filamentation. The multifilament scenario exhibits near-exponential probability density functions, with extreme events exceeding the significant wave height by more than a factor of 10. The extreme events are isolated in space and in time. The macroscopic origin of these experimentally observed heavy-tail statistics is shown to be local refractive index variations inside the nonlinear medium, induced by multiphoton absorption and subsequent plasma thermalization. Microscopically, mergers between filament strings appear to play a decisive role in the observed rogue wave statistics.
UR - http://www.scopus.com/inward/record.url?scp=84890289356&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.111.243903
DO - 10.1103/PhysRevLett.111.243903
M3 - Article
AN - SCOPUS:84890289356
VL - 111
JO - Physical review letters
JF - Physical review letters
SN - 0031-9007
IS - 24
M1 - 243903
ER -