Thermal self-action of high-power continuous and pulse-periodic CO2 laser radiation in air: II. Laboratory experiments

Grachev, G. N.; Zemlyanov, A. A.; Ponomarenko, A. G.; Tishchenko, V. N.; Geints, Yu. É.; Kabanov, A. M.; Павлов, А. А.; Pogodaev, V. A.; Pinaev, P. A.; Смирнов, А. Л.; Statsenko, P. A.

doi:10.1134/s1024856014020067

Cited by 9 publications

(3 citation statements)

References 5 publications

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“…For calculating the radiation spectral intensity we use the results from Ref. [49], in which the pulse-length of a CO2 -laser and the repetition rate of these impulses are equal to is the constant of a thin structure.…”

Section: Calculation Resultsmentioning

confidence: 99%

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Terahertz Radiation Generation Process In The Medium Based On The Array of The Elongated Nanoparticles

Sadykov¹,

Pilipenko²,

Jolnirov³

2021

Preprint

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We conduct a theoretical study and numerical simulations of terahertz radiation generation in the medium based on armchair-edge nanoribbons and zigzag nanotubes with metallic conductivity. The multicascade mechanism of radiation generation is considered in the task of terahertz radiation generation. The level of the injection current in nanoparticle arrays has been estimated. The task expands to the similar medium where radiation current is generated with the use of infrared radiation stimulated absorption, for example, radiation of a CO2 laser. Numerical results for the effective dielectric function have been obtained with the use of the effective medium-approximation, the Maxwell-Garnett’s theory and the Maxwell-Garnett model with the Clausius-Mossotti correction (geometrical model arrays).

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Section: Calculation Resultsmentioning

confidence: 99%

“…(2.6). Later on for calculating total spectral intensity of the radiation we will use the results of[49], in which the pulse length of a CO2 laser and the religion .…”

mentioning

confidence: 99%

Terahertz Radiation Generation Process In The Medium Based On The Array of The Elongated Nanoparticles

Sadykov¹,

Pilipenko²,

Jolnirov³

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The thermal blooming causes beam spreading and distortion when the laser beam propagates in an absorbing medium. In the 1970s, research on thermal blooming mainly focused on adaptive optics [1][2][3][4][5][6][7] , high-power laser transmission [8][9][10] and other related fields. Based on the numerical simulation, the scaling laws of beam expansion [11] and phase compensation [12] have been investigated.…”

Section: Introductionmentioning

confidence: 99%

Study on phase change of Gaussian beam induced by thermal blooming effect

rui

Zou

et al. 2023

Ninth Symposium on Novel Photoelectronic Detection Technology and Applications

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When a high-power laser beam propagates in an absorbing medium, the thermal blooming effect cause the phase distortion of the beam, which will seriously affect the beam quality. In this paper, with the help of the laser propagation theory and thermo-optic coefficient experiment, the phase change of Gaussian beam propagating in various concentrations of ink-ethanol is investigated. The result shows that the phase change is proportional to the input power, which may provide the theoretical and experimental basis for phase compensation, and have potential applications in the adaptive optics, underwater optical communications, biological tissue imaging and other related field.

show abstract

Terahertz radiation generation process in the medium based on the array of the elongated nanoparticles

2021

View full text Add to dashboard Cite

We conduct a theoretical study and numerical simulations of terahertz radiation generation in the medium based on armchair-edge nanoribbons and zigzag nanotubes with metallic conductivity. The multicascade mechanism of radiation generation is considered in the task of terahertz radiation generation. The level of the injection current in nanoparticle arrays has been estimated. The task expands to the similar medium where radiation current is generated with the use of infrared radiation stimulated absorption, for example, radiation of a CO2 laser. Numerical results for the effective dielectric function have been obtained with the use of the effective mediumapproximation, the Maxwell-Garnett's theory and the Maxwell-Garnett model with the Clausius-Mossotti correction (geometrical model arrays).

show abstract

Thermal self-action of high-power continuous and pulse-periodic CO2 laser radiation in air: II. Laboratory experiments

Cited by 9 publications

References 5 publications

Terahertz Radiation Generation Process In The Medium Based On The Array of The Elongated Nanoparticles

Terahertz Radiation Generation Process In The Medium Based On The Array of The Elongated Nanoparticles

Study on phase change of Gaussian beam induced by thermal blooming effect

Terahertz radiation generation process in the medium based on the array of the elongated nanoparticles

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