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

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

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)851-855
Number of pages5
JournalPhysical Review Letters
Volume43
Issue number12
DOIs
StatePublished - 1979

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