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Optics and Spectroscopy

Profile of the far wings of self-broadened resonance lines in the fluorescence spectrum of optically dense cesium and rubidium vapor

Andrey N. Klyucharev, A. V. Lazarenko, Mladen Movre

Published Nov 1, 1978• 0 citations
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Spectroscopic investigations of optically dense cesium vapor excited by light of resonance lines

Andrey N. Klyucharev, B. V. Dobrolezh

Journal of Applied Spectroscopy•Nov 1, 1976•0 citations

Emission measurements in the wing of the self-broadened Cs resonance lines

A. N. Klucharev, Vladimir A. Lazarenko, Goran Pichler +1 more

Physics Letters A•Apr 1, 1977•1 citation

Femtosecond laser fluorescence and propagation in very dense potassium vapor

Yacoub Makdisi, Jahja O. Kokaj, K. Afrousheh +3 more

Femtosecond (fs) laser propagation and fluorescence of dense potassium vapor was studied, and the spectral region around the first and the second doublets of the principal series lines of potassium atoms was investigated. In our search we did not observe the conical emission in the far field, although it was previously observed in the case of rubidium. We discuss the possible reason of this unexpected result. The fluorescence spectrum revealed Rb impurity resonance lines in emission due to the collisional redistribution from the K(4p) levels into the Rb(5p) levels. In the forward propagation of 400 nm femtosecond light we observed the molecular band red shifted from potassium second doublet. However, no molecular spectrum was observed when the mode-locked fs laser light was discretely tuned within the wings of the first resonance lines, at 770 nm.

Optics Express•Dec 3, 2013•2 citations

Near-resonant femtosecond laser induced cone emission from rubidium vapor

Silvije Vdović, Hrvoje Skenderović, Gordana Školnik +4 more

In this work we report the CE from the dense rubidium vapor excited by the output from the mode-locked, 100 fs laser oscillator. The cone emission was observed only when the laser beam propagated through the high-density vapor (N>5x1016 cm− 3) and for the smaller densities no CE was observed. The laser central wavelength was changed in the wide interval, from the far blue wing of the D2 line to the far red wing of the D1 line. The observed CE in the far blue wing of the D2 line is interpreted as a consequence of the self-focusing and self-phase modulation according to the adiabatic following limit. The emission in the red wing of the D2 line shows defocusing of the propagating beam. In contrast to the CE reported so far, the bright central spot was not observed in the far blue wing. In the near blue wing the central spot appears due to the two- photon resonance at 778 nm. The temporal shape of the CE, measured by cross-correlation in the SHG crystal shows pulse breaking and extreme lengthening.

•Apr 6, 2009•0 citations

Resonance Fluorescence of Atoms at High Photon Densities

Constantine Mavroyannis

Springer eBooks•Jan 1, 1981•0 citations

The Broadening of the Resonance Lines of Rubidium Under Different Pressures of its Own Vapor.

Shang-Yi. Ch'en

•Jan 1, 1940•0 citations
Femtosecond (fs) laser propagation and fluorescence of dense potassium vapor was studied, and the spectral region around the first and the second doublets of the principal series lines of potassium atoms was investigated. In our search we did not observe the conical emission in the far field, although it was previously observed in the case of rubidium. We discuss the possible reason of this unexpected result. The fluorescence spectrum revealed Rb impurity resonance lines in emission due to the collisional redistribution from the K(4p) levels into the Rb(5p) levels. In the forward propagation of 400 nm femtosecond light we observed the molecular band red shifted from potassium second doublet. However, no molecular spectrum was observed when the mode-locked fs laser light was discretely tuned within the wings of the first resonance lines, at 770 nm.
In this work we report the CE from the dense rubidium vapor excited by the output from the mode-locked, 100 fs laser oscillator. The cone emission was observed only when the laser beam propagated through the high-density vapor (N>5x1016 cm− 3) and for the smaller densities no CE was observed. The laser central wavelength was changed in the wide interval, from the far blue wing of the D2 line to the far red wing of the D1 line. The observed CE in the far blue wing of the D2 line is interpreted as a consequence of the self-focusing and self-phase modulation according to the adiabatic following limit. The emission in the red wing of the D2 line shows defocusing of the propagating beam. In contrast to the CE reported so far, the bright central spot was not observed in the far blue wing. In the near blue wing the central spot appears due to the two- photon resonance at 778 nm. The temporal shape of the CE, measured by cross-correlation in the SHG crystal shows pulse breaking and extreme lengthening.