Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Soviet Journal of Quantum Electronics

Four-photon resonant parametric sum-frequency generation using coherent and noise pumping in potassium vapor

Andrey V Aleksandrov, Vladimir S Solomatin

Published Apr 30, 1984• 0 citations
Publisher

Abstract

An experimental investigation was made of the use of noise pumping in four-photon resonant parametric sum-frequency generation in potassium vapor. A two-photon resonance with the 9S1/2 and 7D3/2,5/2 levels and a one-photon resonance with the 10P1/2,3/2 and 11P1/2,3/2 levels were used. A comparison was made with the case of coherent pumping and it was found that, under conditions of strong dispersion and wave mismatch, the efficiency of the process using noise pumping differs negligibly from the efficiency using coherent pumping although the spectral density of the coherent pump is substantially higher than that of the noise pump.

DOI
10.1070/qe1984v014n04abeh005055

Related papers

Spectral properties of resonant four-photon parametric oscillation

G. M. Barykinsky, Vladimir V. Lebedev, V M Plyasulya

An investigation was made of the spectral properties of four-photon parametric oscillation when the frequency of the generated field is tunable near an atomic resonance line. An ω4 = ω1–ω2+ω3 generation process involving coherent anti-Stokes scattering in thallium vapor was achieved experimentally. Biharmonic pumping was provided by resonant excitation of a 6P1/2–6P3/2 two-photon transition at the frequency ω1–ω2. Measurements were made of the oscillation power when the frequency ω3 was tunable near the frequency of a 6P3/2–7D3/2 transition at various thallium vapor pressures. It was found that the spectral properties of resonant parametric oscillation depend strongly on the concentration of active-mixture atoms and also on various saturation effects.

Soviet Journal of Quantum Electronics•Mar 31, 1982•3 citations

Efficient parametric sum-frequency generation by noncoherent two-photon pumping of metal vapors

Andrey V Aleksandrov, S. A. Pleshanov, Vladimir S Solomatin

Four-photon parametric sum-frequency generation in a randomly modulated (noncoherent) pump field was investigated, and an expression obtained for the quantum conversion efficiency. It was found experimentally that on broadening the pump line by a factor of 20–30 (lowering the spectral density by a factor of 10–20) the quantum conversion efficiency for 9.27 μ radiation in sodium vapor reached 35%, exceeding that for the case of quasimonochromatic pumping.

Soviet Journal of Quantum Electronics•Oct 31, 1982•0 citations

Four-photon parametric up-conversion in sodium vapor pumped with monochromatic and noise radiation under strong and weak dispersion conditions

Andrey V Aleksandrov, Vladimir S Solomatin

A theoretical investigation is made of the influence of various effects on four-photon parametric upconversion in metal vapors: saturation, one-photon absorption of output radiation, two-photon depletion of pump radiation, wave detuning, and dispersion of the group velocities of the interacting waves. Estimates indicate that the simultaneous influence of all these effects can ensure a fairly efficient up-conversion of noise pump radiation, compared with the monochromatic case. The results agree well with the experimental results obtained in a study of conversion of tunable CO2 laser radiation in sodium vapor.

Soviet Journal of Quantum Electronics•Oct 31, 1983•0 citations

Four-photon parametric oscillation in thallium vapor

Vladimir V. Lebedev, V M Plyasulya, G. M. Barykinsky

An effort was made to optimize the coherent anti-Stokes scattering four-photon parametric oscillation process in thallium vapor in the 277 nm range. The dependence of the stimulated emission power on the thallium vapor pressure, confocal parameter, detuning from two-photon resonance, and pump power was investigated. The considerable saturation of the parametric oscillation power observed both with respect to the pump power and the vapor pressure was attributed to the breakdown of the wave interaction as a result of the strong high-frequency Kerr effect under two-photon resonance conditions.

Soviet Journal of Quantum Electronics•Mar 31, 1979•0 citations

RADIATIONS AMPLIFICATION AND IMAGE CONVERSION IN STIMULATED FOUR-WAVE PARAMETRIC MIXING IN POTASSIUM VAPOR

M. E. Movsesyan, A. Papoyan, Svetlana Shmavonyan

We report the results of experimental investigation of radiations amplification in stimulated four-wave parametric mixing in potassium vapor using two cells holding active medium (generator-amplifier system). Under the two-photon excitation on 4S→6S transition, the gain of parametrically generated violet radiation on 5P→4S transitions is caused by the amplification of infrared radiation on 6S→5P transitions due to optically pumped stimulated emission process. The optimum conditions for seed radiations amplification are found. For these conditions we realized, for the first time, an image conversion from infrared region of spectrum (3.66 µ) to violet (0.4 µ) with quantum efficiency of conversion over 100% (“brightness intensification”).

Journal of Nonlinear Optical Physics & Materials•Oct 1, 1992•6 citations

Probing electronic coherences by combined two- and one-photon excitation in atomic vapors

E. Gaižauskas, Dionysios Pentaris, Thomas Efthimiopoulos +1 more

Wave mixing in a three-level quantum system induced by two-photon resonant pump and one-photon resonant coupling at lower transition has been studied theoretically and experimentally. Resonantly enhanced difference-frequency generation efficiency was observed clearly dependent on the time delay and its sign between the femtosecond pump and probe. The role of the atomic coherences on the amplification without inversion during different sequences of interaction in a closed three-level system has been also stressed. These findings were confirmed experimentally in atomic potassium, where strong parametric amplification, induced by the pump delayed with respect to the probe, has been observed for the first time.

Optics Letters•Jan 8, 2013•17 citations
An experimental investigation was made of the use of noise pumping in four-photon resonant parametric sum-frequency generation in potassium vapor. A two-photon resonance with the 9S1/2 and 7D3/2,5/2 levels and a one-photon resonance with the 10P1/2,3/2 and 11P1/2,3/2 levels were used. A comparison was made with the case of coherent pumping and it was found that, under conditions of strong dispersion and wave mismatch, the efficiency of the process using noise pumping differs negligibly from the efficiency using coherent pumping although the spectral density of the coherent pump is substantially higher than that of the noise pump.
An investigation was made of the spectral properties of four-photon parametric oscillation when the frequency of the generated field is tunable near an atomic resonance line. An ω4 = ω1–ω2+ω3 generation process involving coherent anti-Stokes scattering in thallium vapor was achieved experimentally. Biharmonic pumping was provided by resonant excitation of a 6P1/2–6P3/2 two-photon transition at the frequency ω1–ω2. Measurements were made of the oscillation power when the frequency ω3 was tunable near the frequency of a 6P3/2–7D3/2 transition at various thallium vapor pressures. It was found that the spectral properties of resonant parametric oscillation depend strongly on the concentration of active-mixture atoms and also on various saturation effects.
A theoretical investigation is made of the influence of various effects on four-photon parametric upconversion in metal vapors: saturation, one-photon absorption of output radiation, two-photon depletion of pump radiation, wave detuning, and dispersion of the group velocities of the interacting waves. Estimates indicate that the simultaneous influence of all these effects can ensure a fairly efficient up-conversion of noise pump radiation, compared with the monochromatic case. The results agree well with the experimental results obtained in a study of conversion of tunable CO2 laser radiation in sodium vapor.
An effort was made to optimize the coherent anti-Stokes scattering four-photon parametric oscillation process in thallium vapor in the 277 nm range. The dependence of the stimulated emission power on the thallium vapor pressure, confocal parameter, detuning from two-photon resonance, and pump power was investigated. The considerable saturation of the parametric oscillation power observed both with respect to the pump power and the vapor pressure was attributed to the breakdown of the wave interaction as a result of the strong high-frequency Kerr effect under two-photon resonance conditions.
We report the results of experimental investigation of radiations amplification in stimulated four-wave parametric mixing in potassium vapor using two cells holding active medium (generator-amplifier system). Under the two-photon excitation on 4S→6S transition, the gain of parametrically generated violet radiation on 5P→4S transitions is caused by the amplification of infrared radiation on 6S→5P transitions due to optically pumped stimulated emission process. The optimum conditions for seed radiations amplification are found. For these conditions we realized, for the first time, an image conversion from infrared region of spectrum (3.66 µ) to violet (0.4 µ) with quantum efficiency of conversion over 100% (“brightness intensification”).
Wave mixing in a three-level quantum system induced by two-photon resonant pump and one-photon resonant coupling at lower transition has been studied theoretically and experimentally. Resonantly enhanced difference-frequency generation efficiency was observed clearly dependent on the time delay and its sign between the femtosecond pump and probe. The role of the atomic coherences on the amplification without inversion during different sequences of interaction in a closed three-level system has been also stressed. These findings were confirmed experimentally in atomic potassium, where strong parametric amplification, induced by the pump delayed with respect to the probe, has been observed for the first time.