We demonstrate the realization of intense Airy-Airy-Airy (${\mathrm{\text{Airy}}}^{3}$) light bullets by combining a spatial Airy beam with an pulse in time. The ${\mathrm{\text{Airy}}}^{3}$ belong to family linear spatiotemporal wave packets that do not require any specific tuning material optical properties for their formation and withstand both diffraction dispersion during propagation. show are robust up high intensity regime, since they capable healing nonlinearly induced distortions profile.

We demonstrate the existence of an additional class stationary accelerating Airy wave forms that exist in presence third-order (Kerr) nonlinearity and nonlinear losses. Numerical simulations experiments, agreement with analytical model, highlight how these solutions sustain evolution beams. The generic nature solution allows extension results to other settings, a variety applications are suggested.

The ability to manipulate the multiple properties of light diversifies light-matter interaction and light-driven applications. Here, using quantum control, we introduce an approach that enables amplitude, sign, even configuration generated fields be manipulated in all-optical manner. Following this approach, demonstrate generation "flying doughnut" terahertz (THz) pulses. We show single-cycle THz pulse radiated from dynamic ring current has electric field structure is azimuthally polarized...

The nonlinear dynamics of intense truncated Airy beams in Kerr ionizing media are investigated from numerical simulations and experiments. We show numerically that a competition between the linear effects takes place may be modified by tuning width main lobe beam size truncating diaphragm. Our analysis shows acceleration peak, an inherent feature propagation, is preserved only for powers below certain threshold. Nonlinear propagation with low power sustained continuous energy flux its...

Optical aberrations are usually considered a drawback in optical systems. Here we show that through them net cubic phase modulation can be imprinted on the wave front of light beam, which after spatial Fourier transformation creates Airy beams. Experiments and supporting simulations demonstrate appropriately adjusted cylindrical lenses produce both one- two-dimensional tunable The use simple elements makes approach attractive convenient for generating intense femtosecond beams filaments....

We study, both experimentally and theoretically, the underlying physics of third-harmonic generation in air by a filamented infrared femtosecond laser pulse propagating through thin plasma channel. It is shown that recently observed more than two-order-of-magnitude increase efficiency occurs due to plasma-enhanced third-order susceptibility. An estimate effective value this susceptibility given.

The creation of volume plasma density gratings in air by temporally overlapped high-intensity IR femtosecond laser pulses is demonstrated experimentally. Through the diffraction various probe beams grating properties are recovered including its thickness and refractive index modulation, as well decay dynamics. these photonic devices suggest that they can be used applications involving high intensity lasers, such filamentation, where no physical objects placed path beams.

The process of third-harmonic generation during the filamentation intense IR femtosecond laser pulses in air is investigated experimentally. It shown that introduction a thin plasma string created by another pulse, perpendicularly to filament's path, dramatically reshapes beam into Bessel-like far-field distribution, while at same time significantly enhances, up 250 times, its conversion efficiency.

We present an easy way to calibrate the simple plasma conductivity (PCo) technique for measuring electron densities in gases. show that calibration can be achieved using a single absolute density measurement through independent analytical technique, our case in-line holographic microscopy (i-HOM). validity and power of method by comparing calibrated PCo with results from i-HOM over extended range experimental parameters.

Abstract Light-sheet fluorescence microscopy (LSFM) has now become a unique tool in different fields ranging from three-dimensional (3D) tissue imaging to real-time functional of neuronal activities. Nevertheless, obtaining high-quality artifact-free images large, dense and inhomogeneous samples is the main challenge method that still needs be adequately addressed. Here, we demonstrate significant enhancement LSFM image qualities by using scanning non-diffracting illuminating beams, both...

The formation of long stationary filaments resulting in uniform high density plasma strings air using short pulse UV laser Bessel beams is shown. length and the electron can be easily tuned by adjusting conical wavefront angle. It shown that this regime string extended over meter-long scales without any compromise uniformity or temporal evolution filamented pulse.

In this Letter, we report on the experimental investigation of three-dimensional (3D) optical trapping by a tightly focused circular Airy beam (CAB). We compare strength for 800 nm polystyrene particles, with two equivalent Gaussian beams same envelope (SEGB) and spot-size (SSGB). Through video microscopy, found that SEGB is incapable forming 3D trap, particles are pushed along propagation direction, while SSGB CAB could form stable traps. Measurements trap stiffness revealed although both...

It is shown, both through simulations and experiments, that the in-line holographic microscopy technique can be used to retrieve very small refractive-index perturbations caused during filamentation of ultrashort laser pulses. This provides possibility having spatially temporally (four dimensions) resolved measurements changes, down 10${}^{\ensuremath{-}4}$, from objects with diameters as 10 \ensuremath{\mu}m. Moreover, we demonstrate power in discriminating multiple filaments a precise...

In this paper, we study the optical trapping of anti-reflection core-shell microspheres by regular Gaussian beam and several structured beams including radially polarized Gaussian, petal, hard-aperture-truncated circular Airy beams. We show that using an appropriate microsphere for light can dramatically enhance strength trap compared to common beam. The optimal thickness ratio minimizes scattering force is obtained polystyrene-silica anatase-amorphous titania microspheres, such core-shells...

We demonstrate experimentally that by using transient plasma photonic lattices, the attributes of intense femtosecond laser filaments, such as peak intensity and length, can be dynamically controlled. The extended lattice structure is generated two co-propagating non-diffracting Bessel beams in water. use structures to control competition between linear nonlinear effects involved filamentation opens way for extensive process.

We investigate the nonlinear propagation of intense Bessel and Airy beams forming filaments in transparent media. identify two regimes separated by relative importance multiphoton absorption self-focusing main or lobe, due to Kerr effect. show that are reshaped into stationary whose is sustained a continuous energy flux lobe from its neighbors. The regime obtained for cone angles exceeding certain threshold; focusing Gaussian beam sufficient power with an axicon. With respect linear beams,...

We investigate the impact of a stochastic forcing, comprised sum time-lagged copies single source noise, on system dynamics. This type forcing could be made artificially, or it result shared upstream inputs to through different channel lengths. By means rigorous mathematical framework, we show that such is, in fact, equivalent classical case stochastically-driven dynamical with time-delayed intrinsic dynamics but without time lag input noise. also observe resonancelike effect between period...

We investigate the nonlinear propagation of intense Airy beams forming filaments in transparent media. demonstrate existence stationary a planar geometry. These preserve intensity profile and transverse acceleration peak. show that is sustained by continuous energy flux to main lobe from its neighbors. For powers exceeding certain threshold, this regime becomes unstable. extend our results 2-dimensional case: with high reshape into multifilamentary pattern induced Kerr multiphoton...

A mode-locked Erbium-doped fibre laser with graphene as a saturable absorber is numerically simulated. Mode-locked operation and controllable pulse compression through dispersion management by using dispersion-decreasing fibres (DDF) in cavity ring are investigated. By examining several profiles for DDF, it found that fixed DDF length maximum factor achieved hyperbolic profile. Higher attributed to decreasing along DDF. In addition, shown results the generation of 123fs pulses shorter than...