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Applied Physics A

Unidirectional saturation spectroscopy, I theory and short dipole lifetime limit

Murray Sargent, P. E. Toschek, Danielmeyer H-G

Published Sep 1, 1976• 39 citations
Publisher
DOI
10.1007/bf00895016

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Unidirectional saturation spectroscopy, II

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Effects of truncated Gaussian-beam variations in laser saturation spectroscopy

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The effects of possibly truncated Gaussian-beam variations in probe and saturator-wave intensities are studied analytically and numerically for saturation spectroscopy of homogeneously and inhomogeneously broadened systems. The measured saturation intensity is shown to be about 2.5 times greater for Gaussian beams than for uniform saturation. Systems characterized by the short dipole lifetime limit (T2≪T1) are treated, revealing sizeable modifications to the depths of coherent pulsation dips and Bennet holes. The equal lifetime case (T2=T1) is studied as well, showing substantial influence on the dynamic Stark effect.

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The effect of self-saturation in unidirectional-wave spectroscopy of nondegenerate transitions

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Specific manifestations of the effect of self-saturation in unidirectional-wave spectroscopy compared with spectroscopy of counterpropagating waves have been identified. The possibility of direct measurement of the rates of the stimulated transfer caused by its own spontaneous emission is shown for spectroscopy of unidirectional waves.

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Saturation spectroscopy

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Coherent dips revisited

Murray Sargent

The semiclassical two-level multiwave coefficients are presented in the limit that the population-difference lifetime T1, is much greater than the dipole lifetime T2. These coefficients are easy to understand analytically and show how pump-probe detuning shifts the phase and the amplitude of pump scattering off induced population pulsations. In particular, a simple formula is found that shows how energy can be exchanged by two waves in an apparently pure-index regime. An FM wave is shown to propagate unchanged through such a medium, and the beat-note component of an AM wave is shown to be unmodified by a thin medium. Simple formulas for T1 of the order of T2 are given that reveal intense pump-dispersive and Lorentzian features at a glance. The results are of use in saturation spectroscopy, modulation spectroscopy, optical instabilities, and phase conjugation.

Journal of the Optical Society of America B•May 1, 1988•2 citations

Saturation Spectroscopy

Pierre Meystre, Murray Sargent

Springer eBooks•Jan 1, 1990•0 citations
The effects of possibly truncated Gaussian-beam variations in probe and saturator-wave intensities are studied analytically and numerically for saturation spectroscopy of homogeneously and inhomogeneously broadened systems. The measured saturation intensity is shown to be about 2.5 times greater for Gaussian beams than for uniform saturation. Systems characterized by the short dipole lifetime limit (T2≪T1) are treated, revealing sizeable modifications to the depths of coherent pulsation dips and Bennet holes. The equal lifetime case (T2=T1) is studied as well, showing substantial influence on the dynamic Stark effect.
The semiclassical two-level multiwave coefficients are presented in the limit that the population-difference lifetime T1, is much greater than the dipole lifetime T2. These coefficients are easy to understand analytically and show how pump-probe detuning shifts the phase and the amplitude of pump scattering off induced population pulsations. In particular, a simple formula is found that shows how energy can be exchanged by two waves in an apparently pure-index regime. An FM wave is shown to propagate unchanged through such a medium, and the beat-note component of an AM wave is shown to be unmodified by a thin medium. Simple formulas for T1 of the order of T2 are given that reveal intense pump-dispersive and Lorentzian features at a glance. The results are of use in saturation spectroscopy, modulation spectroscopy, optical instabilities, and phase conjugation.