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Пальчиков, Виталий Геннадьевич

Организационные подразделения

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Институт лазерных и плазменных технологий

Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.

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Пальчиков

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Виталий Геннадьевич

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Теперь показываю 1 - 10 из 14

Только метаданные
Lattice light shift in strontium optical clock
(2020) Belotelov, G. S.; Ovsiannikov, V. D.; Sutyrin, D. V.; Gribov, A. Y.; Pal'chikov, V. G.; Пальчиков, Виталий Геннадьевич
Results of theoretical evaluations of uncertainties arising from the atom-lattice interaction effects on the clock frequency are presented for Sr atoms. Possibilities for simultaneous tuning of optical lattice frequency and intensity parameters are discussed aiming at minimizing uncertainties induced by interaction of Sr atoms with the field of magic-wavelength optical lattice. The fractional contributions to the clock-frequency shift from the spontaneous emission of the lattice-beam amplifier after having passed the optical fiber are determined at the level below 10(-18).
Только метаданные
Measuring the Electric Field Strength of Microwave Radiation at the Frequency of the Radiation Transition Between Rydberg States of Atoms 85Rb
(2020) Stelmashenko, E. F.; Klezovich, O. A.; Baryshev, V. N.; Tishchenko, V. A.; Palchikov, V. G.; Пальчиков, Виталий Геннадьевич
© 2020, Pleiades Publishing, Ltd.The spectral characteristics of the resonance effect of the electromagnetic-induced transparency (EIT) of rubidium atomic vapors induced by intense radiation with a wavelength in the region from 479 to 486 nm in the presence of microwave radiation at a frequency of 1 to 300 GHz, which splits the energy of transition of the atom from the resonant 5P3/2 states into the Rydberg nD5/2 state, are determined. The magnitude of the splitting of the EIT peak is proportional to the electric field intensity of the microwave radiation. Simple approximation expressions are obtained for the numerical calculation of the transition amplitude between Rydberg nD5/2 and (n + 1)P3/2 states with large principal quantum numbers n. A setup has been developed for measuring the electric field intensity of microwave radiation based on measuring the frequency of splitting of the resonance of an electron microscope in the absorption spectrum of probe radiation.
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Microwave Field Metrology Based on Rydberg States of Alkali-Metal Atoms
(2022) Ovsiannikov, V. D.; Palchikov, V. G.; Glukhov, I. L.; Пальчиков, Виталий Геннадьевич
The high-precision determination of microwave radiation parameters may be based on measurements of the spectral characteristics of radiation transitions between the Rydberg states of atoms. Frequencies and matrix elements are calculated for dipole transitions from even-parity nS1/2 and nD5/2 to odd-parity nвЂІP3/2 and nвЂІF7/2 (where nвЂІ = n, n В± 1, n В± 2) for the Rydberg states of alkali-metal atoms. The matrix elements determine the splitting of Rydberg-state energy levels in the field of a resonance microwave (Ојw) radiation, which results in the splitting of the resonance in electromagnetic induced transparency (EIT). Numerical computations based on the single-electron quantum defect method (QDM) and the FuesвЂ™ model potential (FMP) approach with the use of the most reliable data of the current literature on quantum defect values were performed for the 2S, 2P, 2D and 2F series of the Rydberg states of Li, Na, K, Rb and Cs atoms. The calculated data were approximated by quadratic polynomials of the principal quantum number. The polynomial coefficients were determined with the use of a standard curve-fitting interpolation polynomial procedure for numerically presented functions. The approximation equations may be used for the accurate evaluation of the frequencies and matrix elements of Ојw transitions in wide ranges of the Rydberg-state quantum numbers n andgt andgt 1.
Только метаданные
Towards an optical time scale at VNIIFTRI
(2022) Sutyrin, D. V.; Gribov, A. Y.; Balaev, R. I.; Malimon, A. N.; Gorokhina, A. A.; Pal’chikov, V. G.; Пальчиков, Виталий Геннадьевич
© 2022 Kvantovaya Elektronika and IOP Publishing LimitedA circuit for converting the frequency of an optical standard based on ultracold 87Sr atoms is updated for its comparison with the frequency of microwave standards from the State primary standard of time and frequency units and the national time scale, GET 1-2018. The results of the corresponding experiments are reported and analysed. An instrumental complex for reproducing and storing time and frequency units and the national time scale of the primary standard is described; this complex includes an optical standard based on strontium atoms and microwave standards of new generation. The order of formation of the atomic time scale with application of optical standards is also determined.
Только метаданные
Precision Spectroscopy of Rydberg States in Alkaline Earth Atoms for Millimeter-Wave Radiation Measurement
(2023) Glukhov, I. L.; Kamenski, A. A.; Ovsiannikov, V. D.; Pal’chikov, V. G.; Пальчиков, Виталий Геннадьевич
Только метаданные
Analysis of uncertainties of a cold-ytterbium atomic frequency standard using operational parameters of its optical lattice
(2021) Semenko, A. V.; Belotelov, G. S.; Sutyrin, D. V.; Slyusarev, S. N.; Pal'chikov, V. G.; Пальчиков, Виталий Геннадьевич
© 2021 Turpion Ltd.. All rights reserved.We have assessed the effect of optical lattice laser field parameters (polarisation, intensity, and wavelength) of a cold-ytterbium atomic frequency standard on the systematic uncertainty of precision clock transition frequency measurements. The spectrum and polarisation of the laser field of the lattice have been investigated in detail directly in the spatial region of interaction of cold ytterbium atoms with the laser field. The Stark shift of the clock transition in the vicinity of the magic wavelength of the laser has been estimated as a function of the experimentally measured laser field intensity in the dipole approximation. The estimates have been used to calculate the residual systematic uncertainty in the light shift of the optical lattice laser frequency.
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Theory of nonlinear sub-Doppler spectroscopy taking into account atomic-motion-induced density-dependent effects in a gas
(2024) Yudin, V. I.; Taichenachev, A. V.; Basalaev, M. Yu.; Prudnikov,O. N.; Pal’chikov, V. G.; Пальчиков, Виталий Геннадьевич
Только метаданные
On the efficiency of laser pumping of hyperfine structure sublevels of rubidium-87 and cesium-133 atoms
(2021) Magunov, A. I.; Palchikov, V. G.; Пальчиков, Виталий Геннадьевич
© 2021 Institute of Physics Publishing. All rights reserved.The evolution of the hyperfine structure magnetic sublevel populations of 87Rb and 133Cs atoms in resonant linearly polarized laser fields is theoretically analyzed. Analytical expressions are obtained for stationary populations of the magnetic sublevels of the ground state 52S1/2 Fg = 1, Ff = 2 in 87Rb and 62S1/2 Fg = 3, Ff = 4 in 133Cs under optical pumping at the Fg Fe = Fg and Ff Fe = Ff transitions of the D2 lines (n2S1/2 n2P3/2) versus the initial populations. The characteristic population stabilization time are obtained by numerical solution for the density matrix equations, depending on the intensity of the laser fields and the detuning of the optical resonance. It is shown that the alternation of the polarization direction of the laser field at the transition Ff Fe = Ff almost completely transfers atoms to the lower sublevel of the “clock” M1 transition Fg M = 0 ↔ Ff M = 0 in rubidium and cesium frequency standards, which proportionally increases the signal of the recording system.
Только метаданные
Theory of Composite Ramsey Sequences of Radiofrequency Pulses beyond the Rotating Wave Approximation
(2024) Yudin, V. I.; Prudnikov, O. N.; Taichenachev, A. V.; Basalaev, M. Yu.; Pal’chikov, V. G.; Пальчиков, Виталий Геннадьевич
Только метаданные
Transitions between triplet Rydberg states of the alkaline-earth-metal atoms for precision measurements of microwave fields
(2024) Glukhov, I. L.; Kamenski, A. A.; Kornev, A. S.; Palchikov, V. G.; Пальчиков, Виталий Геннадьевич