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

Efficient up-conversion of a CO2laser frequency in sodium vapor

N. P. Makarov, A. K. Popov, V. P. Timofeev

Published Mar 31, 1983• 0 citations
Publisher

Abstract

A quantum efficiency of 65% (corresponding to a power efficiency of 2640%) was achieved in up-conversion of λ = 10.8 μ CO2 laser radiation by resonant parametric mixing in sodium vapor.
DOI
10.1070/qe1983v013n03abeh004183

Related papers

Characteristics of resonant parametric conversion of infrared radiation in sodium vapor

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

A study was made of the dependences of the efficiency of resonant parametric frequency conversion in sodium vapor on the infrared radiation wavelength, vapor density, and detuning from two-photon pump resonance. It was found in this conversion system that for each infrared wave the conversion efficiency had three maxima on tuning the frequency of two-photon pumping over the region of a forbidden transition. The principal maximum was realized for accurate two-photon resonance, and the two other maxima resulted from a rise in the cubic susceptibility close to single-photon sum-frequency resonances. A quantum efficiency of 35% was achieved for a 9.26 μ infrared wave.

Soviet Journal of Quantum Electronics•Mar 31, 1982•1 citation

Resonant four-wave frequency mixing in the cw regime in sodium vapor

Vasily G. Arkhipkin, A. L. Vysotin, Im Tkhek-De +2 more

An experimental investigation was made of resonant nonlinear four-wave frequency mixing processes involving cw laser radiation in sodium vapor. It was found that, in spite of an increase in absorption, the use of resonant atomic nonlinearities can substantially improve the frequency conversion efficiency in the cw regime. The results of the measurements were compared with the theoretical conclusions. Ultraviolet radiation was generated at the sum frequency ( λ s = 268 nm) with the proportionality factor C = W s / W 1 W 2 W 3 ≈2W −2

Soviet Journal of Quantum Electronics•Jul 31, 1986•6 citations

Effective frequency conversion of radiation in sodium vapor

Vladimir S Solomatin, A N Meleshko

An investigation was made of frequency conversion in sodium vapor. When the phase-matching conditions were satisfied and the nonlinear susceptibility increased under signal resonance conditions, the quantum efficiency of the conversion process was 40% at low pumping rates.

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

Frequency conversion of cw CO2laser radiation fromλ=10.6μto the 276.8 nm range in a mixture of thallium and cesium vapor

Vasily G. Arkhipkin, A. K. Popov, V. P. Timofeev +1 more

Frequency conversion of cw CO 2 laser radiation to the 276.8 nm ultraviolet range was achieved in a mixture of thallium and cesium vapor by parametric mixing with radiation from a rhodamine 6G dye laser. Two-photon resonance of the pump radiation with the 6 P 1/2 –7 P 3/2 forbidden transition and the proximity of the converted radiation frequency to the frequency of the 6 D 3/2 –7 P 3/2 transition in the thallium atom were utilized. Cesium vapor was used to match the refractive indices of the interacting waves.

Soviet Journal of Quantum Electronics•Nov 30, 1979•5 citations

Infrared up-conversion with resonantly two-photon pumped metal vapors

D. M. Bloom, James T. Yardley, J. F. Young +1 more

We report efficient up-conversion of low-level ir radiation near 10 μ to the near ultraviolet. Radiation at 9.26 μ is converted to 3305 Å with a photon conversion efficiency of 58% and a corresponding power gain of 16.2. The process employs resonant two-photon pumping of the nonallowed 3s-3d transition in Na.

Applied Physics Letters•May 1, 1974•95 citations

Third harmonic generation in phase-matched alkali metal vapors

D. M. Bloom, G. Bekkers, J. F. Young +1 more

We report improvements in conversion efficiency for third harmonic generation in sodium and rubidium vapor. 30-psec pulses of radiation at 1.064 μm have been converted to 0.3547 μm with an energy conversion efficiency of 10%. Factors limiting conversion efficiency are discussed.

Applied Physics Letters•Jun 15, 1975•68 citations
A study was made of the dependences of the efficiency of resonant parametric frequency conversion in sodium vapor on the infrared radiation wavelength, vapor density, and detuning from two-photon pump resonance. It was found in this conversion system that for each infrared wave the conversion efficiency had three maxima on tuning the frequency of two-photon pumping over the region of a forbidden transition. The principal maximum was realized for accurate two-photon resonance, and the two other maxima resulted from a rise in the cubic susceptibility close to single-photon sum-frequency resonances. A quantum efficiency of 35% was achieved for a 9.26 μ infrared wave.
An experimental investigation was made of resonant nonlinear four-wave frequency mixing processes involving cw laser radiation in sodium vapor. It was found that, in spite of an increase in absorption, the use of resonant atomic nonlinearities can substantially improve the frequency conversion efficiency in the cw regime. The results of the measurements were compared with the theoretical conclusions. Ultraviolet radiation was generated at the sum frequency ( λ s = 268 nm) with the proportionality factor C = W s / W 1 W 2 W 3 ≈2W −2
Frequency conversion of cw CO 2 laser radiation to the 276.8 nm ultraviolet range was achieved in a mixture of thallium and cesium vapor by parametric mixing with radiation from a rhodamine 6G dye laser. Two-photon resonance of the pump radiation with the 6 P 1/2 –7 P 3/2 forbidden transition and the proximity of the converted radiation frequency to the frequency of the 6 D 3/2 –7 P 3/2 transition in the thallium atom were utilized. Cesium vapor was used to match the refractive indices of the interacting waves.