Formation of high-power hollow Bessel light beams

Andreev, N. E.; Bychkov, Sergey; Kotlyar, V. V.; Margolin, L. Ya.; Pyatnitskii, L. N.; Serafimovich, P. G.

doi:10.1070/qe1996v026n02abeh000607

Cited by 31 publications

(13 citation statements)

References 2 publications

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“…Using a kinoform design developed by Andreev et al [9,10], Fan et al transformed their 500 mJ, 100 ps Nd:YAG laser beam into a fifth-order, J 5 , Bessel intensity profile. This produced a channel where the radius of the first maximum of the Bessel-beam focus was $4 m and the peak plasma density in the walls of the channel was $3 Â 10 19 cm À3 .…”

Section: Introductionmentioning

confidence: 99%

Hollow plasma channel for positron plasma wakefield acceleration

Kimura

Milchberg

Muggli

et al. 2011

Phys. Rev. ST Accel. Beams

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Plasma wakefield acceleration (PWFA) has demonstrated the ability to produce very high gradients to accelerate electrons and positrons. In PWFA, a drive bunch of charged particles passes through a uniform plasma, thereby generating a wakefield that accelerates a witness bunch traveling behind the drive bunch. This process works well for electrons, but much less so for positrons due to the positive charge attracting rather than repealing the plasma electrons, which leads to reduced acceleration gradient, halo formation, and emittance growth. This problem can be alleviated by having the positron beam travel through a hollow plasma channel. Presented are modeling results for producing 10-100 cm long hollow plasma channels suitable for positron PWFA. These channels are created utilizing laser-induced gas breakdown in hydrogen gas. The results show that hollow channels with plasma densities of order 10 16 cm À3 and inner channel radii of order 20 m are possible using currently available terawatt-level lasers. At these densities and radii, preliminary positron PWFA modeling indicates that longitudinal electric fields on axis can exceed 3 GV=m.

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Section: Introductionmentioning

confidence: 99%

Hollow plasma channel for positron plasma wakefield acceleration

Kimura

Milchberg

Muggli

et al. 2011

Phys. Rev. ST Accel. Beams

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“…Serafimovich under the guidance of professor V.V. Kotlyar and were focused on iterative methods for calculating diffractive optical elements (DOEs) [4][5][6][7][8][9][10][11][12][13][14]. The developed methods allow to increase the energy efficiency of DOE, at the same time improving the quality of their work.…”

Section: Main Scientific Resultsmentioning

confidence: 99%

On the 50th Birthday of Pavel G. Serafimovich

Kolomiets

2016

Collection of Selected Papers of the II International Conference on Information Technology and Nanotechnology

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“…В наших предыдущих работах [29 -30], трансформируя Гауссов пучок Новосибирского лазера на свободных электронах [31,32] с помощью бинарных фазовых аксиконов со спиральной структурой зон [33], изготовленных из высокоомного кремния, мы сформировали БП первого и второго порядков, несущие орбитальный угловой момент (далее «закрученные пучки» [34]). В работе [29] мы использовали эти пучки для генерации ППП на плоских границах металлдиэлектрик.…”

Section: плазмоны на плоских и цилиндрических проводникахunclassified

Feasibility of generating surface plasmon polaritons with a given orbital momentum on cylindrical waveguides using diffractive optical elements

et al. 2019

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Three optical systems employing diffractive optical elements to generate surface plasmon polaritons (SPP) with orbital angular momentum on axisymmetric conductors are considered. In all three systems, the incident radiation is first converted by binary spiral phase axicons into a set of plane waves converging to the optical axis. In the zone of intersection of these waves, a "twisted" Bessel beam is formed. By fitting the diameter of the first ring of the Bessel beam to the diameter of the cylindrical conductor, it is possible to generate a rotating SPP by the "end-fire coupling" method. The use of an additional lens makes it possible to convert the SPP-exciting Bessel beam into a vortex annular beam whose diameter is independent of the topological charge of the beam. In the third scheme, converging plane waves are “intercepted” by a cylindrical metal diffraction grating, which forms twisted SPPs on a cylindrical conductor connected to the grating. Examples of the possible use of the proposed systems in experiments on a terahertz free electron laser are presented.

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Formation of high-power hollow Bessel light beams

Cited by 31 publications

References 2 publications

Hollow plasma channel for positron plasma wakefield acceleration

Hollow plasma channel for positron plasma wakefield acceleration

On the 50th Birthday of Pavel G. Serafimovich

Feasibility of generating surface plasmon polaritons with a given orbital momentum on cylindrical waveguides using diffractive optical elements

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