Rare gas halogen excimers

Brau, C. A.

doi:10.1007/3540130136_20

Cited by 13 publications

(5 citation statements)

References 139 publications

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“…Besides, there arise 275-nm KrF (C-A) and broad Kr 2 F (4 2 Γ → 1,2 2 Γ) bound-free emission bands (Molchanov, 2006;Zvorykin, 2007;Huestis et al, 1984;Brau, 1984). Besides, there arise 275-nm KrF (C-A) and broad Kr 2 F (4 2 Γ → 1,2 2 Γ) bound-free emission bands (Molchanov, 2006;Zvorykin, 2007;Huestis et al, 1984;Brau, 1984).…”

Section: Binary Rare Gas-fluorine Mixturesmentioning

confidence: 98%

“…However, this difference in the quenching rates cannot be an explanation (at least the only one) for increased Kr 2 F fluorescence. The same was considered to be true for the rate of electron attachment to NF 3 at electron temperatures of 1-2 eV (Chantry, 1982) typical of e-beam-pumped KrF lasers (Brau, 1984). Fluorescence intensities of both KrF and Kr 2 F in Ar/Kr/SF 6 mixture drastically decrease.…”

Section: Ar(ne)/kr/nf 3 Mixturesmentioning

confidence: 98%

“…Both fluorescence and absorption spectra of rare gases change with adding fluorine but, in the case of fluorescence, the change is drastic and related to emission of RgF * and Rg 2 F * (Rg is rare gas symbol) excimers, see, e.g., Huestis et al (1984) and Brau (1984).…”

Section: Binary Rare Gas-fluorine Mixturesmentioning

confidence: 99%

“…In Brau (1984), poor efficiency of NF 3 in KrF laser was explained by decreased rate of neutral channel in production of KrF * since branching ratio towards KrF * in the harpoon reaction of Kr * with NF 3 is less than for F 2 (0.57 against 1.0, respectively). However, the neutral channel is not dominant under e-beam pumping.…”

Section: Ar(ne)/kr/nf 3 Mixturesmentioning

confidence: 99%

“…Indeed, it is known from the literature (Levchenko et al, 2010a;Brau, 1984) that, in Ar/Kr mixture with minor additive of Kr, excitation is efficiently transferred from argon (mainly from atomic and molecular ions) to krypton with subsequent production of Kr * (5s). Indeed, it is known from the literature (Levchenko et al, 2010a;Brau, 1984) that, in Ar/Kr mixture with minor additive of Kr, excitation is efficiently transferred from argon (mainly from atomic and molecular ions) to krypton with subsequent production of Kr * (5s).…”

Section: Ar/n 2 Kr/n 2 and Ar/kr/n 2 Mixturesmentioning

confidence: 99%

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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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