AIP conference proceedings

On the measurement of forbidden 21S0 – 23S1 transition frequency in helium by the method of stimulated Raman scattering

P.V. Pokasov, А. В. Тайченачев, E. V. Baklanov

Published Jan 1, 2019• 0 citations

Abstract

In this paper, the possibility of measuring the forbidden 21S0 – 23S1 transition frequency (1557 nm) of a helium atom by the method of stimulated Raman scattering through the intermediate 23P1 level is demonstrated. The transition is important for the spectroscopy of the helium atom because it relates the singlet and triplet parts of the spectrum.

DOI: 10.1063/1.5098156

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Precision measurement of the forbidden 21S0 – 23S1 transition frequency in a helium atom

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We demonstrate the possibility of measuring the forbidden 2 1 S 0 – 2 3 S 1 transition frequency ( λ = 1557 nm) of a helium atom by the method of stimulated Raman scattering through the intermediate 2 3 P 1 level. Singlet (2 1 S 0 ) and triplet (2 3 S 1 ) states have long lifetimes of 20 ms and 8000 s, respectively. The transition is important for the spectroscopy of the helium atom because it relates the singlet and triplet parts of the spectrum.

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About measuring the forbidden 1S-2S transition frequency of a hydrogen atom by stimulated Raman scattering

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We demonstrate the possibility of measuring the forbidden 1S-2S transition frequency (121 nm) of hydrogen atom by the method of stimulated Raman scattering (SRS) when atom from the 1S level moves to the 2S level through the intermediate 3P level. The frequency of the pumping field (103 nm) is close to the frequency of transition 3P-1S, and the frequency of the stimulated scattering (656 nm) - to the frequency of transition 3P-2S.

AIP conference proceedingsJan 1, 20190 citations

Резонансное вынужденное комбинационное рассеяние на запрещенном переходе 2-=SUP=-3-=/SUP=-S-1-=SUP=-1-=/SUP=-S атома гелия

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Precision Measurements of Forbidden Transition Frequencies Using Stimulated Raman Scattering

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Optics and SpectroscopyNov 1, 20180 citations

Resonant Stimulated Raman Scattering from the 23S–11S Forbidden Transition in a Helium Atom

E. V. Baklanov, P.V. Pokasov, А. В. Тайченачев

Resonant stimulated Raman scattering (SRS) from the $${{2}^{3}}S{-} {{1}^{1}}S$$ forbidden transition in a helium atom (62.6 nm) via the intermediate $${{2}^{3}}{{P}_{1}}$$ level has been considered. The metastable $${{2}^{3}}S$$ state has the lowest energy in the triplet spectral region (He*), and the ground state is $${{1}^{1}}S$$ . The reduced kinetic equations for the density matrix, which are used to analyze the SRS resonance, have been derived. The expressions for the field broadening and resonance shift are obtained, the Doppler broadening is taken into account, and numerical estimations are performed.

Optics and SpectroscopyOct 1, 20210 citations

Probability of the 21S0— 23S1forbidden transition in the helium atom

E. V. Baklanov, A V Denisov

The probability W of the forbidden magnetic-dipole 2 1 S 0 — 2 3 S 1 transition in the helium atom is calculated to be 6.11 × 10 -8 s -1 . An estimate is obtained of the number of atoms excited to the 2 1 S 0 state by a travelling wave which is in resonance with the frequency of this transition.

Quantum ElectronicsMay 31, 19973 citations

AIP conference proceedings

On the measurement of forbidden 21S0 – 23S1 transition frequency in helium by the method of stimulated Raman scattering

P.V. Pokasov, А. В. Тайченачев, E. V. Baklanov

Published Jan 1, 2019• 0 citations

Publisher

Abstract

DOI: 10.1063/1.5098156

Related papers

Precision measurement of the forbidden 21S0 – 23S1 transition frequency in a helium atom

E. V. Baklanov, P.V. Pokasov, А. В. Тайченачев

Quantum ElectronicsMay 7, 20181 citation

About measuring the forbidden 1S-2S transition frequency of a hydrogen atom by stimulated Raman scattering

E. V. Baklanov, Sergey M Kobtsev, А. В. Тайченачев

AIP conference proceedingsJan 1, 20190 citations

Резонансное вынужденное комбинационное рассеяние на запрещенном переходе 2-=SUP=-3-=/SUP=-S-1-=SUP=-1-=/SUP=-S атома гелия

E. V. Baklanov, P.V. Pokasov, А.В. Тайченачев

Resonant stimulated Raman scattering (SRS) on the 23S-11S forbidden transition of the helium atom (62.6 nm) through the intermediate 23P1 level is considered. The 23S metastable state has the lowest energy in the triplet part of the spectrum (He *), and the 11S state is the ground state. For the density matrix, shortened kinetic equations are derived, which are used to analyze the SRS resonance. Expressions for field broadening and resonance shift are obtained, Doppler broadening is taken into account, and numerical estimates are made.Resonant stimulated Raman scattering (SRS) on the 23S-11S forbidden transition of the helium atom (62.6 nm) through the intermediate 23P1 level is considered. The 23S metastable state has the lowest energy in the triplet part of the spectrum (He *), and the 11S state is the ground state. For the density matrix, shortened kinetic equations are derived, which are used to analyze the SRS resonance. Expressions for field broadening and resonance shift are obtained, Doppler broadening is taken into account, and numerical estimates are made.

Оптика и спектроскопияJan 1, 20210 citations

Precision Measurements of Forbidden Transition Frequencies Using Stimulated Raman Scattering

E. V. Baklanov, Sergey M Kobtsev, А. В. Тайченачев

Abstract The possibility of precision measurements of frequencies of forbidden transitions of cold atoms in a trap using stimulated Raman scattering is shown. Transition 1S–2S in a hydrogen atom, in which the atom passes from level 1S to level 2S via intermediate level 3P is considered in detail. In this case, the frequency of the pump field (103 nm) is close to the frequency of the 3P–1S transition, while the stimulated scattering frequency (656 nm) is close to the frequency of the 3P–2S transition.Abstract The possibility of precision measurements of frequencies of forbidden transitions of cold atoms in a trap using stimulated Raman scattering is shown. Transition 1S–2S in a hydrogen atom, in which the atom passes from level 1S to level 2S via intermediate level 3P is considered in detail. In this case, the frequency of the pump field (103 nm) is close to the frequency of the 3P–1S transition, while the stimulated scattering frequency (656 nm) is close to the frequency of the 3P–2S transition.

Optics and SpectroscopyNov 1, 20180 citations

Resonant Stimulated Raman Scattering from the 23S–11S Forbidden Transition in a Helium Atom

E. V. Baklanov, P.V. Pokasov, А. В. Тайченачев

Resonant stimulated Raman scattering (SRS) from the ${{2}^{3}}S{-} {{1}^{1}}S$ forbidden transition in a helium atom (62.6 nm) via the intermediate ${{2}^{3}}{{P}_{1}}$ level has been considered. The metastable ${{2}^{3}}S$ state has the lowest energy in the triplet spectral region (He*), and the ground state is ${{1}^{1}}S$ . The reduced kinetic equations for the density matrix, which are used to analyze the SRS resonance, have been derived. The expressions for the field broadening and resonance shift are obtained, the Doppler broadening is taken into account, and numerical estimations are performed.Resonant stimulated Raman scattering (SRS) from the $${{2}^{3}}S{-} {{1}^{1}}S$$ forbidden transition in a helium atom (62.6 nm) via the intermediate $${{2}^{3}}{{P}_{1}}$$ level has been considered. The metastable $${{2}^{3}}S$$ state has the lowest energy in the triplet spectral region (He*), and the ground state is $${{1}^{1}}S$$ . The reduced kinetic equations for the density matrix, which are used to analyze the SRS resonance, have been derived. The expressions for the field broadening and resonance shift are obtained, the Doppler broadening is taken into account, and numerical estimations are performed.

Optics and SpectroscopyOct 1, 20210 citations

Probability of the 21S0— 23S1forbidden transition in the helium atom

E. V. Baklanov, A V Denisov

Quantum ElectronicsMay 31, 19973 citations

Resonant stimulated Raman scattering (SRS) from the

{{2}^{3}}S{-} {{1}^{1}}S

forbidden transition in a helium atom (62.6 nm) via the intermediate

{{2}^{3}}{{P}_{1}}

level has been considered. The metastable

{{2}^{3}}S

state has the lowest energy in the triplet spectral region (He*), and the ground state is

{{1}^{1}}S

. The reduced kinetic equations for the density matrix, which are used to analyze the SRS resonance, have been derived. The expressions for the field broadening and resonance shift are obtained, the Doppler broadening is taken into account, and numerical estimations are performed.