Topic
Bessel beam
About: Bessel beam is a research topic. Over the lifetime, 1946 publications have been published within this topic receiving 42264 citations.
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TL;DR: The model applies to Bose-Einstein condensates and to optical media with saturable nonlinearity, suggesting new ways of making stable three-dimensional solitons and "light bullets" of an arbitrary size.
Abstract: We investigate the existence and stability of three-dimensional solitons supported by cylindrical Bessel lattices in self-focusing media. If the lattice strength exceeds a threshold value, we show numerically, and using the variational approximation, that the solitons are stable within one or two intervals of values of their norm. In the latter case, the Hamiltonian versus norm diagram has a swallowtail shape with three cuspidal points. The model applies to Bose-Einstein condensates and to optical media with saturable nonlinearity, suggesting new ways of making stable three-dimensional solitons and "light bullets" of an arbitrary size.
103 citations
TL;DR: In this paper, the superluminal group velocity of an ultrashort optical Bessel beam pulse is measured over its entire depth of field, corresponding to the cost of computing the traveling ionization front induced by the pulse.
Abstract: The superluminal group velocity of an ultrashort optical Bessel beam pulse is measured over its entire depth of field, corresponding to $\ensuremath{\sim}2\ifmmode\times\else\texttimes\fi{}{10}^{4}$ optical wavelengths. The method used is to measure the traveling ionization front induced by the pulse.
103 citations
TL;DR: In this article, the authors demonstrate the production of an optical beam with a number of embedded optical bottles by passing a Laguerre-Gaussian beam, with a radial mode index of p>1, through an axicon.
102 citations
TL;DR: The use of Bessel beams significantly reduces constraints on critical sample positioning in the nanoscale writing regime, enabling the use of femtosecond pulses for fast inscription of nanometer-scale features over large sample areas.
Abstract: We demonstrate the application of nondiffracting Bessel beams for reproducible nanometric-scale feature patterning in glass. A femtosecond pulse zero-order Bessel beam with a central spot radius of 360 nm was used to write 500 nm radius nanocraters over a longitudinal positioning range exceeding 20 μm, with a variation in radius of less than 10%. The use of Bessel beams significantly reduces constraints on critical sample positioning in the nanoscale writing regime, enabling the use of femtosecond pulses for fast inscription of nanometer-scale features over large sample areas.
102 citations
TL;DR: This work reports the creation of white-light, achromatic Bessel beams using a spatial light modulator and a prism to compensate for the dispersion, which has a radial wavevector and hence an intensity cross-section which is independent of wavelength.
Abstract: We report the creation of white-light, achromatic Bessel beams using a spatial light modulator and a prism to compensate for the dispersion. Unlike the Bessel beam created by a refractive axicon, this achromatic beam has a radial wavevector and hence an intensity cross-section which is independent of wavelength. The technique also lends itself to the generation of higher order Bessel beams with an on-axis optical vortex and associated orbital angular momentum.
100 citations