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| == References== | == References== | ||
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| * ] and ], ''Nondiffracting X waves: exact solutions to free-space ] equation and their infinite realizations'', ] Trans. Ultrasonic Ferroelectric Frequency. '']'' 39, 19-31 (1992) | * ] and ], ''Nondiffracting X waves: exact solutions to free-space ] equation and their infinite realizations'', ] Trans. Ultrasonic Ferroelectric Frequency. '']'' 39, 19-31 (1992) | ||
Revision as of 19:28, 9 October 2007
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In physics, X-waves are localized solutions of the wave equation that travel at a constant velocity along a given direction.
X-waves can be sound, electromagnetic, or gravitational waves. They are built as a non-monochromatic superposition of Bessel beams.
X-waves carry infinite energy and travel superluminally (for electromagnetic waves). Finite energy realizations have been observed in various frameworks.
References
- J. Lu and J. F. Greenleaf, Nondiffracting X waves: exact solutions to free-space scalar wave equation and their infinite realizations, IEEE Trans. Ultrasonic Ferroelectric Frequency. Control 39, 19-31 (1992)
See also
External links
- The Virtual Institute for Nonlinear Optics (VINO), a research collaboration devoted to the investigation of X-waves and conical waves in general
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