Visualization of the evolution of multiple filaments in methanol

Schroeder, Hartmut; Chin, S. L.

doi:10.1016/j.optcom.2004.02.041

Cited by 75 publications

(39 citation statements)

References 20 publications

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“…The longitudinal modulation of variations Dn in the refractive index in the plasma channel at the scale $ 20 mm is explained by the refocusing of radiation upon élamentation. The formation of an extended élament during the propagation of a pulse in liquid can be also visualised by two-photon êuorescence detected through a side window of a cell [80].…”

Section: Filamentation In Condensed Mediamentioning

confidence: 99%

Filamentation of high-power femtosecond laser radiation

2009

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The state of the art of investigations on élamentation of a high-power femtosecond laser radiation in transparent media is reviewed. The physical picture of this phenomenon is presented and its relation to the fundamental concepts of nonlinear optics and practical applications is demonstrated. Experimental and theoretical methods are brieêy considered and laser radiation parameters in the case of élamentation are given. The review can be of interest both

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Section: Filamentation In Condensed Mediamentioning

confidence: 99%

Filamentation of high-power femtosecond laser radiation

2009

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“…9 Light propagation through liquids has been observed by dissolving a fluorescent dye in the material and capturing a side view of the fluorescence. 10 This method, however, does not provide a time-resolved image. Femtosecond time-resolved optical polarigraphy can be used to observe nonlinear index changes induced through the Kerr effect.…”

Section: Introductionmentioning

confidence: 99%

Holographic capture of femtosecond pulse propagation

Centurion

2006

Journal of Applied Physics

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We have implemented a holographic system to study the propagation of femtosecond laser pulses with high temporal ͑150 fs͒ and spatial resolutions ͑4 m͒. The phase information in the holograms allows us to reconstruct both positive and negative index changes due to the Kerr nonlinearity ͑positive͒ and plasma formation ͑negative͒, and to reconstruct three-dimensional structure. Dramatic differences were observed in the interaction of focused femtosecond pulses with air, water, and carbon disulfide. The air becomes ionized in the focal region, while in water long plasma filaments appear before the light reaches a tight focus. In contrast, in carbon disulfide the optical beam breaks up into multiple filaments but no plasma is measured. We explain these different propagation regimes in terms of the different nonlinear material properties.

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“…If the pulse power is much higher than the critical power then the optical beam will break up into multiple filaments [25][26][27]. Each filament will contain approximately the critical power, defined as [28]:…”

Section: Introductionmentioning

confidence: 99%

Self-organization of spatial solitons

Centurion¹,

Pu²

2005

Opt. Express

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Abstract:We present experimental results on the transverse modulation instability of an elliptical beam propagating in a bulk nonlinear Kerr medium, and the formation and self-organization of spatial solitons. We have observed the emergence of order, self organization and a transition to an unstable state. Order emerges through the formation of spatial solitons in a periodic array. If the initial period of the array is unstable the solitons will tend to self-organize into a larger (more stable) period. Finally the system transitions to a disordered state where most of the solitons disappear and the beam profile becomes unstable to small changes in the input energy.

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Visualization of the evolution of multiple filaments in methanol

Cited by 75 publications

References 20 publications

Filamentation of high-power femtosecond laser radiation

Filamentation of high-power femtosecond laser radiation

Holographic capture of femtosecond pulse propagation

Self-organization of spatial solitons

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