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 generation of tunable infrared ultrashort light pulses by nonlinear frequency conversion in atomic cesium vapor

David G. Sarkisyan, A. A. Badalian, S O Sapondzhyan, G. Torosyan

Published Apr 30, 1986• 5 citations
Publisher

Abstract

Electron stimulated Raman scattering in atomic cesium vapor was used in efficient conversion of the freqeuncy of the second harmonic to the infrared range in the case of picosecond YAG and neodymium phosphate glass lasers. The tuning range of ultrashort pulses was 2.21-2.55μ, the spectral width of the output pulses did not exceed 2 cm−1, and the quantum efficiency of the conversion process was 10%. In addition to tunable ultrashort pulses, picosecond pulses at fixed wavelengths of 3.1 and 0.88μ were generated.

DOI
10.1070/qe1986v016n04abeh006571

Related papers

Electron stimulated Raman scattering and four-wave interaction in barium atomic vapor pumped by tunable ultrashort light pulses

S O Sapondzhyan, David G. Sarkisyan, G. Torosyan

A phosphate neodymium glass laser emitting picosecond pulses tunable in the 1.05–1.07 μ range was developed to study nonlinear optical processes in atomic barium vapor. Its temporal characteristics were investigated using a modified second harmonic beam method. Electron stimulated Raman scattering and four-photon parametric conversion in atomic barium vapor were used to obtain efficient conversion of the third harmonic of the picosecond phosphate laser (350–356 nm) to the Stokes (580–600 nm) and anti-Stokes (250–253 nm) waves. The highest conversion quantum efficiency for the Stokes wave was 15%. Electron stimulated Raman scattering in an (6 s 2 ) 1 S –(6 s 7 s ) 1 S –(6 s 6 p ) 1 P 0 system, having a strongly forbidden first transition, was recorded for the first time. In the same system, two-photon pumping generated four-photon parametric superradiance and it was found that the signal and idler waves had anomalously broad spectra (wider than 100 cm −1 ).

Soviet Journal of Quantum Electronics•May 31, 1985•4 citations

Efficient frequency converter of ultrashort pulses to different spectral regions based on atomic barium vapor in a leucosapphire cell

David G. Sarkisyan, A. S. Sarkisyan

A frequency converter for ultrashort pulses, based on a leucosapphire cell in which atomic barium vapor, is formed was realized for the first time. This converter makes it possible to generate picosecond and femtosecond pulses in the infrared, visible, ultraviolet, and vacuum ultraviolet spectral regions with a high efficiency. A method is given for determining the gain G for stimulated Raman scattering in a single laser shot. In the case of stimulated electronic Raman scattering in barium vapor with a 30 cm −1 detuning, at a pressure of 0.1 Torr, and for a pump pulse duration of ~ 20 ps, a value of G = (0.2) I p cm/MW was obtained (where I p is the pump intensity) while the threshold pump energy was below 1 μJ. Other possible applications of a leucosapphire cell containing atomic barium vapor are also described.

Soviet Journal of Quantum Electronics•Apr 30, 1992•3 citations

Generation of widely tunable nanosecond pulses in the vibrational infrared by stimulated Raman scattering from the cesium 6s–5d transition

Alex L. Harris, J. K. Brown, Mark A. Berg +1 more

The first reported use of a pulsed rhodamine-dye laser to generate widely tunable nanosecond light pulses in the vibrational infrared by stimulated electronic Raman scattering is discussed. Narrow-band pulses of up to 120 microJ were generated from 3450 to 900 cm(-1) (2.9 to 11.1 microm), and broadband pulses up to 75 microJ were generated from 3390 to 1800 cm(-1) (2.9 to 5.5 microm) by scattering from the 6s-5d transition in cesium vapor. Cesium dimer effects on tuning-curve structure and efficiency are discussed.

Optics Letters•Feb 1, 1984•17 citations

Stimulated electronic Raman scatterng from the 6s 2S1/2 to the 5d 2D5/2 state of cesium

R. T. Hodgson

The Raman transition 6s 2S1/2-5d 2D5/2 in atomic cesium was stimulated to emit at 2.38 μ by light at 532 nm from a frequency-doubled Nd : YAG laser. With 2 mJ energy in a 10-ns single-mode pulse of green light, a quantum efficiency of 7% for conversion to the infrared light was measured. No tunable infrared stimulated Raman emission could be generated with as much as 7 mJ energy from a multimode dye laser tuned around 601 nm.

Applied Physics Letters•Jan 1, 1979•12 citations

Generation of tunable infrared radiation by electronic stimulated Raman scattering in cesium vapor

V Sh Épshteĭn, V. P. Timofeev, G M Gusev +1 more

An experimental investigation was made of a cesium vapor source of tunable infrared radiation. Dependences of the tuning range and of the intensity of the infrared radiation on the pump intensity and its spectral width were obtained.

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

Generation of picosecond YAG laser radiation and its efficient conversion to the visible and ultraviolet range in atomic barium vapor

David G. Sarkisyan, S O Sapondzhyan

Emission at wavelengths of 1.0615 and 1.074 μ from a self-mode-locked YAG:Nd3+ laser was observed at thresholds which were only 1.5 and 3.5 times higher than the threshold for the emission of radiation with λ = 1.064 μ. Efficient conversion (characterized by a quantum efficiency of ~ 15%) of the third harmonics of the radiations with λ = 1.064 and 1.0615 μ to the visible (590 nm) and ultraviolet (250 nm) ranges was achieved in atomic barium vapor. Electron stimulated Raman scattering due to a strongly forbidden transition in a system of Ba atoms was observed for the first time.

Soviet Journal of Quantum Electronics•Dec 31, 1984•1 citation
Electron stimulated Raman scattering in atomic cesium vapor was used in efficient conversion of the freqeuncy of the second harmonic to the infrared range in the case of picosecond YAG and neodymium phosphate glass lasers. The tuning range of ultrashort pulses was 2.21-2.55μ, the spectral width of the output pulses did not exceed 2 cm−1, and the quantum efficiency of the conversion process was 10%. In addition to tunable ultrashort pulses, picosecond pulses at fixed wavelengths of 3.1 and 0.88μ were generated.
A phosphate neodymium glass laser emitting picosecond pulses tunable in the 1.05–1.07 μ range was developed to study nonlinear optical processes in atomic barium vapor. Its temporal characteristics were investigated using a modified second harmonic beam method. Electron stimulated Raman scattering and four-photon parametric conversion in atomic barium vapor were used to obtain efficient conversion of the third harmonic of the picosecond phosphate laser (350–356 nm) to the Stokes (580–600 nm) and anti-Stokes (250–253 nm) waves. The highest conversion quantum efficiency for the Stokes wave was 15%. Electron stimulated Raman scattering in an (6 s 2 ) 1 S –(6 s 7 s ) 1 S –(6 s 6 p ) 1 P 0 system, having a strongly forbidden first transition, was recorded for the first time. In the same system, two-photon pumping generated four-photon parametric superradiance and it was found that the signal and idler waves had anomalously broad spectra (wider than 100 cm −1 ).
A frequency converter for ultrashort pulses, based on a leucosapphire cell in which atomic barium vapor, is formed was realized for the first time. This converter makes it possible to generate picosecond and femtosecond pulses in the infrared, visible, ultraviolet, and vacuum ultraviolet spectral regions with a high efficiency. A method is given for determining the gain G for stimulated Raman scattering in a single laser shot. In the case of stimulated electronic Raman scattering in barium vapor with a 30 cm −1 detuning, at a pressure of 0.1 Torr, and for a pump pulse duration of ~ 20 ps, a value of G = (0.2) I p cm/MW was obtained (where I p is the pump intensity) while the threshold pump energy was below 1 μJ. Other possible applications of a leucosapphire cell containing atomic barium vapor are also described.
The first reported use of a pulsed rhodamine-dye laser to generate widely tunable nanosecond light pulses in the vibrational infrared by stimulated electronic Raman scattering is discussed. Narrow-band pulses of up to 120 microJ were generated from 3450 to 900 cm(-1) (2.9 to 11.1 microm), and broadband pulses up to 75 microJ were generated from 3390 to 1800 cm(-1) (2.9 to 5.5 microm) by scattering from the 6s-5d transition in cesium vapor. Cesium dimer effects on tuning-curve structure and efficiency are discussed.
Emission at wavelengths of 1.0615 and 1.074 μ from a self-mode-locked YAG:Nd3+ laser was observed at thresholds which were only 1.5 and 3.5 times higher than the threshold for the emission of radiation with λ = 1.064 μ. Efficient conversion (characterized by a quantum efficiency of ~ 15%) of the third harmonics of the radiations with λ = 1.064 and 1.0615 μ to the visible (590 nm) and ultraviolet (250 nm) ranges was achieved in atomic barium vapor. Electron stimulated Raman scattering due to a strongly forbidden transition in a system of Ba atoms was observed for the first time.