Amplification and generation of radiation at the 42Γ → 1,22Γ transition of the Kr2F molecule in an electron-beam-pumped wide-aperture laser

Левченко, А. В.; Зворыкин, В. Д.; Likhomanova, S. V.; Ustinovskii, N. N.; Shtan’ko, V. F.

doi:10.1070/qe2010v040n03abeh014264

Cited by 4 publications

(2 citation statements)

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“…Further experiments with improved accuracy were performed in seven-pass scheme with Ar/ Kr/NF 3 mixture using a 25-ns-long (FWHM) narrow-band probe pulse of dye laser at λ ∼ 460 nm (Levchenko et al, 2010c). It is experimentally observed that, in Kr/F 2 and Ar/F 2 mixtures, fluorescence and absorption spectra of Rg 2 F species are shifted with respect to each other in the opposite direction.…”

Section: Resultsmentioning

confidence: 99%

Transient absorption and laser gain in e-beam-excited Ar/Kr/NF₃(F₂ + N₂) gas mixtures

Ustinovskii¹,

Левченко²,

Зворыкин³

2011

Laser Part. Beams

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Newly developed erosion-plasma-source probe technique has been applied for virtually single shot recording of absorption/fluorescence spectra in the 190-510 nm spectral range of e-beam-excited Ar/Kr/NF 3 (F 2 + N 2 ) mixtures. The e-beam excitation rate of about 1 MW/cm 3 is typical of large-volume rare-gas halide lasers. It is experimentally observed that, in Kr/F 2 and Ar/F 2 mixtures, fluorescence and absorption spectra of Rg 2 F species are shifted with respect to each other in the opposite direction. Continuous absorption spectrum of Ar 2 F excimer is reported, as far as we know, for the first time in the refereed literature. Strong overlapping between the fluorescence and absorption spectra of Ar 2 F is responsible for absence of lasing on Ar 2 F molecule. Absorption spectrum of Kr 2 F excimer is recorded in pure form using the mixture (Ne/Kr/F 2 ) with no alternative broadband absorber. Minor additive of nitrogen to Ar/Kr/F 2 mixture or use of NF 3 instead of F 2 has been found to result in broadband optical amplification centered at λ ∼ 460 nm. The maximum optical gain is estimated as about 0.1 ± 0.05 m −1 .

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Section: Resultsmentioning

confidence: 99%

Transient absorption and laser gain in e-beam-excited Ar/Kr/NF₃(F₂ + N₂) gas mixtures

Ustinovskii¹,

Левченко²,

Зворыкин³

2011

Laser Part. Beams

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“…Transient X-ray-induced absorption was measured in a multi-pass layout with probe pulsed radiation of KrF (λ = 248 nm) or coumarin-47 dye laser (λ = 460 nm) [14] in evacuated laser chamber to eliminate absorption in the gas (Fig. 4).…”

Section: X-ray Induced Transient Absorptionmentioning

confidence: 99%

Degradation of the Transmissive Optics for a Laser-Driven IFE Power Plant under Electron and X-Ray Irradiation

Зворыкин

Alimov

Arlantsev³

et al. 2013

Plasma and Fusion Research

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Several facilities are used to test trasmissive optics of the IFE target chamber and KrF laser driver in regard of transient and residual radiation-induced absorption in the range of 150-1200 nm. Comparative study of radiation darkening of various fused silica glasses, high-purity CaF 2 , MgF 2 , and Al 2 O 3 crystals under irradiation by 300-keV electrons, soft (hν = 6-20 keV) and hard (hν ∼ 400 keV) X-rays is done and better radiation-proof optical materials are selected; the opposite effect of optics bleaching under UV laser light is observed.

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Formation of a gas-discharge plasma active medium on Kr 2 F * trimers

Panchenko

Аndreev

Лосев

et al. 2015

Optics Communications

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Amplification and generation of radiation at the 4²Γ → 1,2²Γ transition of the Kr₂F molecule in an electron-beam-pumped wide-aperture laser

Cited by 4 publications

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Transient absorption and laser gain in e-beam-excited Ar/Kr/NF₃(F₂ + N₂) gas mixtures

Transient absorption and laser gain in e-beam-excited Ar/Kr/NF₃(F₂ + N₂) gas mixtures

Degradation of the Transmissive Optics for a Laser-Driven IFE Power Plant under Electron and X-Ray Irradiation

Formation of a gas-discharge plasma active medium on Kr 2 F * trimers

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Amplification and generation of radiation at the 42Γ → 1,22Γ transition of the Kr2F molecule in an electron-beam-pumped wide-aperture laser

Cited by 4 publications

References 0 publications

Transient absorption and laser gain in e-beam-excited Ar/Kr/NF3(F2 + N2) gas mixtures

Transient absorption and laser gain in e-beam-excited Ar/Kr/NF3(F2 + N2) gas mixtures

Degradation of the Transmissive Optics for a Laser-Driven IFE Power Plant under Electron and X-Ray Irradiation

Formation of a gas-discharge plasma active medium on Kr 2 F * trimers

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Amplification and generation of radiation at the 4²Γ → 1,2²Γ transition of the Kr₂F molecule in an electron-beam-pumped wide-aperture laser

Transient absorption and laser gain in e-beam-excited Ar/Kr/NF₃(F₂ + N₂) gas mixtures

Transient absorption and laser gain in e-beam-excited Ar/Kr/NF₃(F₂ + N₂) gas mixtures