Propagation of the ultrashort pulsed beam with ultrabroad bandwidth in the dispersive medium

Journal Article · Mon Dec 01 04:00:00 EST 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.68.063818· OSTI ID:20640546

Xiquan, Fu ^[1]; Liejia, Qian; Dianyuan, Fan ^[1]; Shuangchun, Wen ^[2]

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1. State Key Laboratory for Advanced Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai 200433 (China)
2. Department of Communication Engineering, School of Computer and Communication, Hunan University, Changsha 410082 (China)

In this paper we have investigated the propagation of the ultrashort pulsed beam with ultrabroad spectral width in the dispersive medium. A general (3+1)-dimensional [(3+1)D] propagation equation first order in the propagation coordinate is derived by using the extended paraxial approximation, which does not resort to the envelope and carrier frequency. This equation can provide an accurate description of the evolution of the ultrashort pulsed beam through the nonlinear dispersive medium, with the numerical value of the spectral bandwidth being bigger than the carrier frequency and considering the absolute frequency. The dispersive and loss coefficients are introduced, and their impacts on the pulse propagation are discussed. In the case of linear propagation, a family of exact solutions of the (3+1)D equation in dispersive media has been obtained, which represents the ultrashort pulse evolving due to gain (loss), dispersion, and diffraction.

• OSTI ID: 20640546
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 68; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
DIFFRACTION
ENERGY LOSSES
EVOLUTION
EXACT SOLUTIONS
GAIN
LASER RADIATION
LIGHT TRANSMISSION
MAXWELL EQUATIONS
NONLINEAR OPTICS
NONLINEAR PROBLEMS
ONE-DIMENSIONAL CALCULATIONS
OPTICAL DISPERSION
PULSES