Effects of Nearly Degenerate States on Photon-Echo Behavior
- 1 November 1971
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 4 (5), 2022-2024
- https://doi.org/10.1103/physreva.4.2022
Abstract
A density-matrix analysis is given of some properties of photon echoes arising from nearly degenerate ground and/or excited states. Modulations of the echo intensity as a function of pulse separation time are predicted as well as more complicated effects near level crossings. In particular, the analysis is applied to the 2.06-kG level crossing in the ground state of ruby.Keywords
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