Journal ArticleDOI
Theory of self-phase-matching
TLDR
A theory of the recently discussed and demonstrated novel phenomenon of self-phase-matching is given by representing the conical beam by a Bessel beam and as a superposition of Bessel beams.Abstract:
A theory of the recently discussed and demonstrated novel phenomenon of self-phase-matching [B. Glushko, B. Kryzhanovsky, and D. Sarkisyan, Phys. Rev. Lett. 71, 243 (1993)] is given by representing the conical beam, produced in the experiments, by a Bessel beam and as a superposition of Bessel beams. The predictions of the theory with the superposition of Bessel beams are in conformity with the observed behavior.read more
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Journal ArticleDOI
Extended filamentation with temporally chirped femtosecond Bessel-Gauss beams in air
TL;DR: By chirping the pulses, the longitudinal range of the generated plasma channels can be extended relative to filaments generated by fully compressed, transform-limited femtosecond pulses, and there is a clear correlation between the extent of filamentation and the intensity of the on-axis emission by the femTosecond Bessel-Gauss beam.
Journal ArticleDOI
Noncollinear second-harmonic generation in periodically poled KTiOPO4 excited by the Bessel beam.
Algirdas Piskarskas,Valerijus Smilgevičius,A. Stabinis,Vytas Jarutis,Valdas Pasiskevicius,Shunhua Wang,J. A. Tellefsen,Fredrik Laurell +7 more
TL;DR: Conversion of the ring-shaped fundamental mode to the axial second-harmonic beam with 30% efficiency for 220-muJ Q -switched Nd:YAG pulses is demonstrated.
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Harmonic generation in gases by use of Bessel–Gauss laser beams
TL;DR: In this paper, Bessel-Gauss beams have been used to generate low-order harmonics in gas jets by using annular apertures and focusing of the ring-type-produced radiation.
Journal ArticleDOI
Generation of Bessel beams by parametric frequency doubling in annular nonlinear periodic structures.
TL;DR: It is demonstrated that the parametric conversion of the Gaussian fundamental beam propagating along the axis of the annular structure leads to the axial emission of the second-harmonic field in the form of the radially polarized first-order Bessel beam.
Journal ArticleDOI
Statistical properties of ultrafast supercontinuum generated by femtosecond Gaussian and Bessel beams: a comparative study
D. Majus,Audrius Dubietis +1 more
TL;DR: In this article, a comparative experimental study of spectral broadening and supercontinuum (SC) generation in 3mm-thick sapphire crystal using 800nm, 130fs pulses in low-numeric-aperture focused Gaussian and axicon-generated Bessel beam geometry is presented.