Cumulative two-pulse photon echoes

This paper reports an unusual photon-echo phenomenon where a train of echoes, generated by a repeating two-pulse sequence, exhibits growth rather than damping. The effect, which is observed in the impurity-ion crystal Pr(3+):YAlO3, results from an electronic ground-state population grating that is c...

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Bibliographic Details
Published in:Physical review. A, General physics General physics, 1984-10, Vol.30 (4), p.1866-1872
Main Authors: SCHENZLE, A, DEVOE, R. G, BREWER, R. G
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Nonlinear optics
Optics
Physics
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Summary:This paper reports an unusual photon-echo phenomenon where a train of echoes, generated by a repeating two-pulse sequence, exhibits growth rather than damping. The effect, which is observed in the impurity-ion crystal Pr(3+):YAlO3, results from an electronic ground-state population grating that is created by the two-pulse sequence and is stored coherently as a modulation in the frequency domain. The depth of modulation increases with increasing n, where n is the number of the two-pulse sequence - a result which is predicted in a three-level density-matrix theory. The effect is closely related to previous stimulated or three-pulse photon echoes but differs in that growth is observed directly for the first time in the simpler two-pulse sequence.
ISSN:0556-2791
DOI:10.1103/PhysRevA.30.1866