Phase matching and harmonic generation in Bessel Gauss–beams
JOSA B, Vol. 15, Issue 3, pp. 1096-1106 (1998)
http://dx.doi.org/10.1364/JOSAB.15.001096
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Abstract
Conversion efficiencies and far-field profiles for third-order harmonic generation in an atomic medium irradiated by an intense Bessel–Gauss beam are calculated with an integral method. The calculation takes into account the nonperturbative variation of the atomic polarizabilities, target depletion by photoionization, and the effect of the free electrons. Numerical results are presented for a pump beam of 355-nm wavelength and up to 3×1013 W/cm2 intensity incident on hydrogen. They are compared with equivalent results for a pure Gaussian pump beam. Significant differences are found that originate from the different phase-matching properties and intensity profile of Bessel–Gauss beams.
© 1998 Optical Society of America
[Optical Society of America ]
OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4160) Nonlinear optics : Multiharmonic generation
(190.4180) Nonlinear optics : Multiphoton processes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(270.4180) Quantum optics : Multiphoton processes
(270.6620) Quantum optics : Strong-field processes
Citation
C. F. R. Caron and R. M. Potvliege, "Phase matching and harmonic generation in Bessel Gauss–beams," J. Opt. Soc. Am. B 15, 1096-1106 (1998)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-15-3-1096
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