Details
| Original language | English |
|---|---|
| Article number | 035401 |
| Journal | Laser Physics Letters |
| Volume | 14 |
| Issue number | 3 |
| Publication status | Published - 20 Jan 2017 |
Abstract
We used a single shot imaging technique to register frequency-angular distribution at different positions along the filament of 55 fs 800 nm pulse focused with the numerical aperture of about 1/600 into air. We have revealed that the phenomena accompanying filamentation develop successively in the propagation direction. The conical emission in the visible comes first. Later in the propagation the conical emission in the infrared appears and develops down to 900 nm at least. Multiple robust light bullets become the secondary sources of the conical waves on the infrared side of the spectrum. The overall scenario of the nonlinear phenomena successive appearance in air is for the first time unified in one experiment in atmospheric gases and simulated with the carrier wave resolved in agreement with the experiment.
Keywords
- conical emission, femtosecond filamentation, supercontinuum
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Instrumentation
- Physics and Astronomy(all)
- Physics and Astronomy (miscellaneous)
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In: Laser Physics Letters, Vol. 14, No. 3, 035401, 20.01.2017.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Near-infrared conical emission from 800 nm filament in air
AU - Shipilo, D. E.
AU - Pushkarev, D. V.
AU - Panov, N. A.
AU - Uryupina, D. S.
AU - Andreeva, V. A.
AU - Volkov, R. V.
AU - Balakin, A. V.
AU - Shkurinov, A. P.
AU - Babushkin, Ihar
AU - Morgner, Uwe
AU - Kosareva, O. G.
AU - Savel'Ev, A. B.
PY - 2017/1/20
Y1 - 2017/1/20
N2 - We used a single shot imaging technique to register frequency-angular distribution at different positions along the filament of 55 fs 800 nm pulse focused with the numerical aperture of about 1/600 into air. We have revealed that the phenomena accompanying filamentation develop successively in the propagation direction. The conical emission in the visible comes first. Later in the propagation the conical emission in the infrared appears and develops down to 900 nm at least. Multiple robust light bullets become the secondary sources of the conical waves on the infrared side of the spectrum. The overall scenario of the nonlinear phenomena successive appearance in air is for the first time unified in one experiment in atmospheric gases and simulated with the carrier wave resolved in agreement with the experiment.
AB - We used a single shot imaging technique to register frequency-angular distribution at different positions along the filament of 55 fs 800 nm pulse focused with the numerical aperture of about 1/600 into air. We have revealed that the phenomena accompanying filamentation develop successively in the propagation direction. The conical emission in the visible comes first. Later in the propagation the conical emission in the infrared appears and develops down to 900 nm at least. Multiple robust light bullets become the secondary sources of the conical waves on the infrared side of the spectrum. The overall scenario of the nonlinear phenomena successive appearance in air is for the first time unified in one experiment in atmospheric gases and simulated with the carrier wave resolved in agreement with the experiment.
KW - conical emission
KW - femtosecond filamentation
KW - supercontinuum
UR - http://www.scopus.com/inward/record.url?scp=85012975339&partnerID=8YFLogxK
U2 - 10.1088/1612-202x/aa539a
DO - 10.1088/1612-202x/aa539a
M3 - Article
AN - SCOPUS:85012975339
VL - 14
JO - Laser Physics Letters
JF - Laser Physics Letters
SN - 1612-2011
IS - 3
M1 - 035401
ER -