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Nonlinear X-wave schematic view
In
physics , a nonlinear X-wave (NLX) is a
multi-dimensional
wave that can travel without
distortion .
At variance with
X-waves , a nonlinear X-wave does exist in the presence of nonlinearity, and in many cases it self-generates from a
Gaussian (in any direction)
wave packet .
The
distinctive feature of an NLX is its "biconical"
shape , (see figure) which appears as an "X" in any section plane containing the wave peak and the direction of propagation.
So far, nonlinear X-waves have been only observed in
nonlinear
optics
experiments , and have been
predicted to occur in a variety of nonlinear media including
Bose–Einstein condensates .
[1]
History
Preliminary experimental results were reported CLEO/QELS conference in 2001
[2]
The first article was published in
Physical Review Letters in 2003 and reported on the theoretical prediction of the existence of nonlinear X-waves.
[3]
The first experimental results also appeared in
Physical Review Letters in 2003.
[4]
References
^ Colas, D.; Laussy, F.; Davis, M. (10 June 2019). "Formation of nonlinear X-waves in condensed matter systems". Physical Review B . 99 (21): 214301.
arXiv :
1903.12357 .
Bibcode :
2019PhRvB..99u4301C .
doi :
10.1103/PhysRevB.99.214301 .
S2CID
88524670 .
^ Valiulis, G.; Kilius, J.; Jedrkiewicz, O.; Bramati, A.; Minardi, S.; Conti, C.; Trillo, S.; Piskarskas, A.; Trapani, Di (2001). "Space-time nonlinear compression and three-dimensional complex trapping in normal dispersion". Quantum Electronics and Laser Science Conference (QELS 2001), Technical Digest . OSA Trends in Optics and Photonics. Vol. 57 (Postconference ed.). Washington DC: Optical Society of America.
arXiv :
physics/0311081 .
^ Conti, C.; Trillo, S.; Di Trapani, P.; Valiulis, G.; Piskarskas, A.; Jedrkiewicz, O.; Trull, J. (2 May 2003). "Nonlinear Electromagnetic X Waves". Physical Review Letters . 90 (17): 170406.
Bibcode :
2003PhRvL..90q0406C .
doi :
10.1103/physrevlett.90.170406 .
ISSN
0031-9007 .
PMID
12786060 .
^ Di Trapani, P.; Valiulis, G.; Piskarskas, A.; Jedrkiewicz, O.; Trull, J.; Conti, C.; Trillo, S. (28 August 2003). "Spontaneously Generated X-Shaped Light Bullets". Physical Review Letters . 91 (9): 093904.
arXiv :
physics/0303083 .
Bibcode :
2003PhRvL..91i3904D .
doi :
10.1103/physrevlett.91.093904 .
ISSN
0031-9007 .
PMID
14525185 .
S2CID
11160156 .
External links