Temporally recurrent spatial ordering of atomic population in gases: Grating echoes

T. W. Mossberg; R. Kachru; E. Whittaker; S. R. Hartmann

doi:10.1103/PhysRevLett.43.851

Temporally recurrent spatial ordering of atomic population in gases: Grating echoes

T. W. Mossberg, R. Kachru, E. Whittaker, S. R. Hartmann

Columbia University

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

We predict and observe the periodic reformation of spatial gratings in Na vapor commencing τ2 after the application of the second of two resonant (λ=5896) standing-wave excitation pulses which are themselves separated by τ. These gratings have spatial periodicity λ2, and backscatter our laser. One set of alternate echoes relaxes because of velocity-changing collisions; phase-changing collisions play no role. The other set is amplitude modulated with laser detuning Δ as cosΔτ.

Original language	English
Pages (from-to)	851-855
Number of pages	5
Journal	Physical Review Letters
Volume	43
Issue number	12
DOIs	https://doi.org/10.1103/PhysRevLett.43.851
State	Published - 1979

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abstract = "We predict and observe the periodic reformation of spatial gratings in Na vapor commencing τ2 after the application of the second of two resonant (λ=5896) standing-wave excitation pulses which are themselves separated by τ. These gratings have spatial periodicity λ2, and backscatter our laser. One set of alternate echoes relaxes because of velocity-changing collisions; phase-changing collisions play no role. The other set is amplitude modulated with laser detuning Δ as cosΔτ.",

author = "Mossberg, \{T. W.\} and R. Kachru and E. Whittaker and Hartmann, \{S. R.\}",

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AU - Kachru, R.

AU - Whittaker, E.

AU - Hartmann, S. R.

PY - 1979

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N2 - We predict and observe the periodic reformation of spatial gratings in Na vapor commencing τ2 after the application of the second of two resonant (λ=5896) standing-wave excitation pulses which are themselves separated by τ. These gratings have spatial periodicity λ2, and backscatter our laser. One set of alternate echoes relaxes because of velocity-changing collisions; phase-changing collisions play no role. The other set is amplitude modulated with laser detuning Δ as cosΔτ.

AB - We predict and observe the periodic reformation of spatial gratings in Na vapor commencing τ2 after the application of the second of two resonant (λ=5896) standing-wave excitation pulses which are themselves separated by τ. These gratings have spatial periodicity λ2, and backscatter our laser. One set of alternate echoes relaxes because of velocity-changing collisions; phase-changing collisions play no role. The other set is amplitude modulated with laser detuning Δ as cosΔτ.

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DO - 10.1103/PhysRevLett.43.851

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VL - 43

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JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Temporally recurrent spatial ordering of atomic population in gases: Grating echoes

Abstract

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