Assignment of the Even-Parity Excitons inO
- 22 October 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 43 (17), 1260-1263
- https://doi.org/10.1103/physrevlett.43.1260
Abstract
This Letter presents for the first time a detailed two-photon spectrum of the even-parity excitons of the yellow series in O. Contrary to one-photon data, it is possible to measure directly and exciton contributions without applying external perturbations. The two-photon spectrum gives evidence for a strong mixing between the yellow and the green series which is explained by exchange interaction and nondiagonal parts in the effective-mass Hamiltonian.
Keywords
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