Group-phase Velocity Difference and THz Oscillation of the Nonlinear Refractive Index in Air: Particle-like Solutions

Journal Article · Thu Oct 29 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3265363· OSTI ID:21325582

Kovachev, L M ^[1]

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1. Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradcko chaussee Blvd., 1784 Sofia (Bulgaria)

We present an analytical approach to the theory of optical pulses with superbroad spectrum propagated in air. The corresponding modified amplitude envelope equation admits oscillated with terahertz frequency nonlinear term The fluctuation is due to the group and phase velocity difference. In the partial case of femtosecond pulses with power, little above the critical for self-focusing, exact (3+1)D particle-like solution is found.

• OSTI ID: 21325582
• Journal Information: AIP Conference Proceedings, Vol. 1186, Issue 1; Conference: 1. international conference on applications of mathematics in technical and natural sciences, Sozopol (Bulgaria), 22-27 Jun 2009; Other Information: DOI: 10.1063/1.3265363; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AIR
AMPLITUDES
FLUCTUATIONS
INTEGRO-DIFFERENTIAL EQUATIONS
MATHEMATICAL SOLUTIONS
NONLINEAR PROBLEMS
OSCILLATIONS
PHASE VELOCITY
POLARIZATION
PULSES
REFRACTIVE INDEX
THZ RANGE